Document:

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                                                                    EXHIBIT 10.1

                            APOGEE TECHNOLOGY, INC.
                         STOCK SUBSCRIPTION AGREEMENT

Apogee Technology, Inc.
129 Morgan Avenue
Norwood, MA  02760

Ladies and Gentlemen:

      Subject to the terms and conditions set forth below, the undersigned
hereby offers to purchase from Apogee Technology, Inc., a Delaware corporation
(the "Company"), ____ units (the "Securities"), each unit consisting of one (1)
share of the Company's Common Stock, par value $.01 per share, and a right to
purchase one-fifth (1/5) of a share of Common Stock, for the aggregate purchase
price of $______ in cash ($2.00 per unit), which accompanies this Agreement.
Attached hereto is a form of warrant which will be issued to the undersigned to
evidence the aggregate rights to be received along with the unit shares.

      In connection with the execution of this Agreement and to induce the
Company to sell the Securities to the undersigned, the undersigned hereby
represents, warrants and agrees as follows:

      1. Accredited Investor. I am an "accredited investor" as such term is
defined in Regulation D under the Securities Act of 1933, as amended (the
"Securities Act"), for the following reason (Please initial one or more):

      ___   My individual income was in excess of $200,000 in each of the past
            two years, or my joint income with my spouse was in excess of
            $300,000 in each of those years, and I reasonably expect my income
            to reach the same level in the current year.

      ___   My individual net worth or joint net worth with my spouse exceeds
            $1,000,000.

      ___   The undersigned is a trust, corporation or partnership with total
            assets in excess of $5,000,000, not formed for the specific purpose
            of acquiring the Securities, whose purchase of the Securities will
            be directed by a person whose knowledge and experience in financial
            and business matters is such that he or she is capable of evaluating
            the merits and risks of the investment in the Securities.

      ___   The undersigned is an entity in which all of the equity owners are
            accredited investors.

      ___   Other (Please specify): ___________________________________________

      2. Experience and Suitability. I am qualified by my knowledge and
experience in financial and business matters to evaluate the merits and risks of
an investment in the Securities and to make an informed decision relating
thereto. I have the financial capability for making the

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investment and protecting my interests, and I can afford a complete loss of the
investment. The investment is a suitable one for me.

      3. No Need for Liquidity. I am aware that I will be unable to liquidate my
investment readily in case of an emergency and that the Securities being
purchased may have to be held for an indefinite period of time. My overall
commitment to investments which are not readily marketable is not excessive in
view of my net worth and financial circumstances and the purchase of the
Securities will not cause such commitment to become excessive. In view of such
facts, I acknowledge that I have adequate means of providing for my current
needs, anticipated future needs and possible contingencies and emergencies and
have no need for liquidity in the investment in the Securities. I am able to
bear the economic risk of this investment.

      4. Opportunity to Investigate. Prior to the execution of this Agreement,
my advisors and I have had the opportunity to ask questions of, and receive
answers from, representatives of the Company concerning the terms and conditions
of this transaction, and the finances, operations, business and prospects of the
Company. My advisors and I have also had the opportunity to obtain additional
information necessary to verify the accuracy of information furnished about the
Company. Accordingly, I have independently evaluated the risks of purchasing the
Securities, and I am satisfied that I have received information with respect to
all matters which I consider material to my decision to make this investment.

      5. Investment Purpose. I am acquiring the Securities for my own account
for the purpose of investment and not with a view to, or for resale in
connection with, the distribution thereof, nor with any present intention of
distributing or selling the Securities. I understand that the Securities have
not been registered under the Securities Act or the securities laws of any
state, and I hereby agree not to make any sale, transfer or other disposition of
any such Securities unless either (i) the Securities first shall have been
registered under the Securities Act and all applicable state securities laws, or
(ii) an exemption from such registration is available, and the Company has
received such documents and agreements from me and the transferee as the Company
requests at such time.

      6. Legends. I understand that until the Securities have been registered
under the Securities Act and applicable state securities laws each certificate
representing such securities shall bear a legend substantially similar to the
following:

            The securities represented by this certificate have not been
            registered under the Securities Act of 1933, as amended (the "Act"),
            or any state securities laws, have been acquired for investment, and
            may not be sold, pledged, hypothecated or otherwise transferred
            unless a registration statement under the Act and applicable state
            law is in effect with regard thereto or unless an exemption from
            such registration is available.

      7. No Regulatory Approval of Merits. I understand that neither the
Securities and

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Exchange Commission nor the commissioner or department of securities or attorney
general of any state has passed upon the merits or qualifications of, nor
recommended nor approved, the Securities. Any representation to the contrary is
a criminal offense.

      8. Independent Advice. I understand that I am urged to seek independent
advice from my professional advisors relating to the suitability for me of an
investment in the Company in view of my overall financial needs and with respect
to the legal and tax implications of such an investment.

      9. Indemnification. I understand the meaning and legal consequences of
this Agreement and agree to indemnify and hold harmless the Company and each
director and officer thereof from and against any and all loss, damage or
liability due to or arising out of a breach of any representation, warranty or
agreement of the undersigned contained in this Agreement.

      10. Authority and Noncontravention. The execution and performance hereof
violates no order, judgment, injunction, agreement or controlling document to
which the undersigned is a party or by which the undersigned is bound. If an
organization, (i) the undersigned is duly organized, validly existing and in
good standing under the laws of the jurisdiction in which it has been formed;
(ii) the undersigned has the right and power under its organizational
instruments to execute, deliver and perform its obligations hereunder; and (iii)
this Agreement has been duly authorized by all necessary action on the part of
all officers, directors, partners, stockholders and trustees and will not
violate any agreement to which the undersigned is a party; and (iv) the
individual executing and delivering this Agreement has the requisite right,
power, capacity and authority to do so on behalf of the organization. The
undersigned has not been organized for the purpose of subscribing for the
Securities.

      11. Duration. I understand that I may not cancel, terminate or revoke this
Agreement or any agreement made by me hereunder and that this Agreement shall
survive my death or disability and shall be binding upon my heirs, executors,
administrators, successors and assigns.

      12. Further Assurances. Within ten (10) days after receipt of a written
request from the Company, I agree to provide such information and to execute and
deliver such documents as reasonably may be necessary to comply with any and all
laws and ordinances to which the Company is subject.

      13. Miscellaneous.

            (a) Notices. All notices, requests, consents and other
      communications hereunder shall be in writing, shall be addressed to the
      receiving party's address set forth below or to such other address as a
      party may designate by notice hereunder, and shall be either (i) delivered
      by hand, (ii) made by telex, telecopy or facsimile transmission, (iii)
      sent by overnight courier, or (iv) sent by registered mail, return receipt
      requested, postage prepaid.

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            If to the undersigned:

                  To the address designated in Section 14 hereof.

            If to the Company:

                  To the address set forth at the top of this Agreement.

      All notices, requests, consents and other communications hereunder shall
      be deemed to have been given either (i) if by hand, at the time of the
      delivery thereof to the receiving party at the address of such party set
      forth above, (ii) if made by telex, telecopy or facsimile transmission, at
      the time that receipt thereof has been acknowledged by electronic
      confirmation or otherwise, (iii) if sent by overnight courier, on the next
      business day following the day such notice is delivered to the courier
      service, or (iv) if sent by registered mail, on the 5th business day
      following the day such mailing is made.

            (b) Entire Agreement. This Agreement embodies the entire agreement
      and understanding between the parties hereto with respect to the subject
      matter hereof and supersedes all prior oral or written agreements and
      understandings relating to the subject matter hereof. No statement,
      representation, warranty, covenant or agreement of any kind not expressly
      set forth in this Agreement shall affect, or be used to interpret, change
      or restrict, the express terms and provisions of this Agreement.

            (c) Modifications and Amendments. The terms and provisions of this
      Agreement may be modified or amended only by written agreement executed by
      the parties hereto.

            (d) Waivers and Consents. The terms and provisions of this Agreement
      may be waived, or consent for the departure therefrom granted, only by
      written document executed by the party entitled to the benefits of such
      terms or provisions. No such waiver or consent shall be deemed to be or
      shall constitute a waiver or consent with respect to any other terms or
      provisions of this Agreement, whether or not similar. Each such waiver or
      consent shall be effective only in the specific instance and for the
      purpose for which it was given, and shall not constitute a continuing
      waiver or consent.

            (e) Assignment. This Agreement may not be transferred or assigned
      without the prior written consent of the Company and any such transfer or
      assignment shall be made only in accordance with applicable laws and any
      such consent.

            (f) Benefit. All statements, representations, warranties, covenants
      and agreements in this Agreement shall be binding on the parties hereto
      and shall inure to the benefit of the respective successors and permitted
      assigns of each party hereto. Nothing in this Agreement shall be construed
      to create any rights or obligations except among the

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      parties hereto, and no person or entity shall be regarded as a third-party
      beneficiary of this Agreement.

            (g) Governing Law. This Agreement and the rights and obligations of
      the parties hereunder shall be construed in accordance with and governed
      by the law of the State of Delaware, without giving effect to the conflict
      of law principles thereof.

            (h) Jurisdiction and Service of Process. Any legal action or
      proceeding with respect to this Agreement shall be brought in the courts
      of the Commonwealth of Massachusetts or of the United States of America
      for the Eastern District of Massachusetts. By execution and delivery of
      this Agreement, each of the parties hereto accepts for itself and in
      respect of its property, generally and unconditionally, the jurisdiction
      of the aforesaid courts. Each of the parties hereto irrevocably consents
      to the service of process of any of the aforementioned courts in any such
      action or proceeding by the mailing of copies thereof by certified mail,
      postage prepaid, to the party at its address set forth in Section 13 (a)
      hereof.

            (i) Severability. In the event that any court of competent
      jurisdiction shall determine that any provision, or any portion thereof,
      contained in this Agreement shall be unenforceable in any respect, then
      such provision shall be deemed limited to the extent that such court deems
      it enforceable, and as so limited shall remain in full force and effect.
      In the event that such court shall deem any such provision, or portion
      thereof, wholly unenforceable, the remaining provisions of this Agreement
      shall nevertheless remain in full force and effect .

            (j) Interpretation. The parties hereto acknowledge and agree that:
      (i) each party and its or his counsel has reviewed the terms and
      provisions of this Agreement; (ii) the rule of construction to the effect
      that any ambiguities are resolved against the drafting party shall not be
      employed in the interpretation of this Agreement; and (iii) the terms and
      provisions of this Agreement shall be construed fairly as to the parties
      hereto and not in favor of or against any party, regardless of which party
      was generally responsible for the preparation of this Agreement. Whenever
      used herein, the singular number shall include the plural, the plural
      shall include the singular, the use of any gender shall include all
      persons.

            (k) Headings and Captions. The headings and captions of the various
      subdivisions of this Agreement are for convenience of reference only and
      shall in no way modify, or affect the meaning or construction of any of
      the terms or provisions hereof.

            (l) No Waiver of Rights, Powers and Remedies. No failure or delay by
      a party hereto in exercising any right, power or remedy under this
      Agreement, and no course of dealing between the parties hereto, shall
      operate as a waiver of any such right, power or remedy of the party. No
      single or partial exercise of any right, power or remedy under

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      this Agreement by a party hereto, nor any abandonment or discontinuance of
      steps to enforce any such right, power or remedy, shall preclude such
      party from any other or further exercise thereof or the exercise of any
      other right, power or remedy hereunder. The election of any remedy by a
      party hereto shall not constitute a waiver of the right of such party to
      pursue other available remedies. No notice to or demand on a party not
      expressly required under this Agreement shall entitle the party receiving
      such notice or demand to any other or further notice or demand in similar
      or other circumstances or constitute a waiver of the rights of the party
      giving such notice or demand to any other or further action in any
      circumstances without such notice or demand.

            (m) Survival of Representations and Warranties. All representations
      and warranties made by the parties hereto in this Agreement or in any
      other agreement, certificate or instrument provided for or contemplated
      hereby, shall survive (i) the execution and delivery hereof, (ii) any
      investigations made by or on behalf of the parties and (iii) the closing
      of the transaction contemplated hereby, and shall remain in full force and
      effect for a period of three years following the date of such closing.

            (n) Expenses. Each of the parties hereto shall pay its own fees and
      expenses (including the fees of any attorneys, accountants, appraisers or
      others engaged by such party) in connection with this Agreement and the
      transactions contemplated hereby whether or not the transactions
      contemplated hereby are consummated.

            (o) No Broker or Finder. Each of the parties hereto represents and
      warrants to the other that no broker, finder or other financial consultant
      has acted on its behalf in connection with this Agreement or the
      transactions contemplated hereby in such a way as to create any liability
      on the part of the other. Each of the parties hereto agrees to indemnify
      and save the other harmless from any claim or demand for commission or
      other compensation by any broker, finder, financial consultant or similar
      agent claiming to have been employed by or on behalf of such party and to
      bear the cost of legal expenses incurred in defending against any such
      claim.

            (p) Counterparts. This Agreement may be executed in one or more
      counterparts, and by different parties hereto on separate counterparts,
      each of which shall be deemed an original, but all of which together shall
      constitute one and the same instrument.

      14. I am purchasing the Securities as follows (please check as
appropriate):

             _____ individually           _____ in trust

             _____ joint tenants          _____ as a partnership

             _____ tenants in common      _____ other: ____________________

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      Name:___________________________________________________

      Telephone:______________________________________________

      Home Address:___________________________________________

      City:___________________________________ State:_________

      Zip:____________________________________________________

      Business:_______________________________________________

      Address:________________________________________________

      City:___________________________________ State:_________

      Zip:____________________________________________________

      Business Telephone:_____________________________________

      Communications should be sent to (please check one):     ____ business or
                                                               ____ home address

      Federal Income Tax I.D. No. (Social Security Number for Individual
      Investors):
      ________________________

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      15.  Under penalties of perjury, I certify that:

            A. The number shown above is my correct Taxpayer Identification
Number;

            B. I am not subject to backup withholding either because I have not
been notified by the Internal Revenue Service (IRS) that I am subject to backup
withholding as a result of a failure to report all interest or dividends, or the
IRS has notified me that I am no longer subject to backup withholding.

      IN WITNESS WHEREOF, the undersigned has executed this Agreement as a
sealed instrument as of this ___th day of ______________, 1999.

                                             (For Co-owners, if applicable)

__________________________________           __________________________________
Investor Signature                           Investor signature

__________________________________           __________________________________
Print Name                                   Print Name

         ***************************************************************

The foregoing subscription for Securities of Apogee Technology, Inc. is hereby
accepted.

                                    APOGEE TECHNOLOGY, INC.

                                    By:________________________________________
                                          David Spiegel, President

                                    DATE:______________________________________

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                                                                    EXHIBIT 10.2

                                                               For the Purchase
                                                         of _________ shares of
                                                               Common Stock
No. W-1999-__

                           WARRANT FOR THE PURCHASE OF
                             SHARES OF COMMON STOCK
                                       OF
                             APOGEE TECHNOLOGY, INC.
                            (A Delaware Corporation)

        VOID AFTER 5:00 P.M., EASTERN STANDARD TIME, ON DECEMBER 15, 2009

      Apogee Technology, Inc., a Delaware corporation (the "Company") hereby
certifies that Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C., or its
registered assigns (the "Registered Holder"), is entitled, subject to the terms
set forth below, to purchase from the Company, at any time or from time to time
on or before the earlier of December 15, 2009 at not later than 5:00 p.m.
(Boston, Massachusetts time) and the termination of this Warrant as provided in
Section 9 below, __________ shares of Common Stock, $.01 par value, of the
Company ("Common Stock"), at a purchase price of $2.50 per share. The number of
shares purchasable upon exercise of this Warrant, and the purchase price per
share, each as adjusted from time to time pursuant to the provisions of this
Warrant, are hereinafter referred to as the "Warrant Stock" and the "Purchase
Price," respectively.

      1. Exercise.

            (a) This Warrant may be exercised by the Registered Holder, in whole
or in part, by surrendering this Warrant, with the purchase form appended hereto
as Exhibit I duly executed by such Registered Holder, at the principal office of
the Company, or at such other office or agency as the Company may designate,
accompanied by payment in full, in lawful money of the United States, of the
Purchase Price payable in respect of the number of shares of Warrant Stock
purchased upon such exercise.

            (b) Each exercise of this Warrant shall be deemed to have been
effected immediately prior to the close of business on the day on which this
Warrant shall have been surrendered to the Company as provided in subsection
1(a) above. At such time, the person or persons in whose name or names any
certificates for Warrant Stock shall be issuable upon such exercise as provided
in subsection 1(c) below shall be deemed to have become the holder or holders of
record of the Warrant Stock represented by such certificates.

            (c) As soon as practicable after the exercise of this Warrant in
full or in part, and in any event within 10 days thereafter, the Company at its
expense will cause to be issued in

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the name of, and delivered to, the Registered Holder, or, subject to the
terms and conditions hereof, as such Holder (upon payment by such Holder of any
applicable transfer taxes) may direct:

                  (i) a certificate or certificates for the number of full
shares of Warrant Stock to which such Registered Holder shall be entitled upon
such exercise plus, in lieu of any fractional share to which such Registered
Holder would otherwise be entitled, cash in an amount determined pursuant to
Section 3 hereof, and

                  (ii) in case such exercise is in part only, a new warrant or
warrants (dated the date hereof) of like tenor, calling in the aggregate on the
face or faces thereof for the number of shares of Warrant Stock equal (without
giving effect to any adjustment therein) to the number of such shares called for
on the face of this Warrant minus the number of such shares purchased by the
Registered Holder upon such exercise as provided in subsection 1(a) above.

      2. Adjustments.

            (a) If outstanding shares of the Company's Common Stock shall be
subdivided into a greater number of shares or a dividend in Common Stock shall
be paid in respect of Common Stock, the Purchase Price in effect immediately
prior to such subdivision or at the record date of such dividend shall
simultaneously with the effectiveness of such subdivision or immediately after
the record date of such dividend be proportionately reduced. If outstanding
shares of Common Stock shall be combined into a smaller number of shares, the
Purchase Price in effect immediately prior to such combination shall,
simultaneously with the effectiveness of such combination, be proportionately
increased. When any adjustment is required to be made in the Purchase Price, the
number of shares of Warrant Stock purchasable upon the exercise of this Warrant
shall be changed to the number determined by dividing (i) an amount equal to the
number of shares issuable upon the exercise of this Warrant immediately prior to
such adjustment, multiplied by the Purchase Price in effect immediately prior to
such adjustment, by (ii) the Purchase Price in effect immediately after such
adjustment.

            (b) If there shall occur any capital reorganization or
reclassification of the Company's Common Stock (other than a change in par value
or a subdivision or combination as provided for in subsection 2(a) above), then,
as part of any such reorganization or reclassification, lawful provision shall
be made so that the Registered Holder of this Warrant shall have the right
thereafter to receive upon the exercise hereof the kind and amount of shares of
stock or other securities or property which such Registered Holder would have
been entitled to receive if, immediately prior to any such reorganization or
reclassification, such Registered Holder had held the number of shares of Common
stock which were then purchasable upon the exercise of this Warrant. In any such
case, appropriate adjustment (as reasonably determined by the Board of Directors
of the Company) shall be made in the application of the provisions set forth
herein with respect to the rights and interests thereafter of the Registered
Holder of this Warrant such that the provisions set forth in this Section 2
(including provisions with respect to adjustment of the Purchase Price) shall
thereafter be applicable, as nearly as is reasonably practicable, in relation to
any shares of stock or other securities or property thereafter deliverable upon
the exercise of this Warrant.

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            (c) When any adjustment is required to be made in the Purchase
Price, the Company shall promptly mail to the Registered Holder a certificate
setting forth the Purchase Price after such adjustment and setting forth a brief
statement of the facts requiring such adjustment. Such certificate shall also
set forth the kind and amount of stock or other securities or property into
which this Warrant shall be exercisable following the occurrence of any of the
events specified in subsection 2(a) or (b) above.

      3. Fractional Shares. The Company shall not be required upon the exercise
of this Warrant to issue any fractional shares, but shall make an adjustment
therefor in cash on the basis of the mean between the low bid and high asked
prices of the Warrant Stock on the over-the-counter market as reported by the
Nasdaq Stock Market or the closing market price of the Warrant Stock on a
national securities exchange on the trading day immediately prior to the date of
exercise, whichever is applicable, or if neither is applicable, then on the
basis of the then market value of the Warrant Stock as shall be reasonably
determined by the Board of Directors of the Company.

      4. Limitation on Sales, etc. Each holder of this Warrant acknowledges that
this Warrant and the Warrant Stock have not been registered under the Securities
Act of 1933, as now in force or hereafter amended, or any successor legislation
(the "Act"), and agrees not to sell, pledge, distribute, offer for sale,
transfer or otherwise dispose of this Warrant or any Warrant Stock issued upon
its exercise in the absence of (a) an effective registration statement under the
Act as to this Warrant or such Warrant Stock and registration or qualification
of this Warrant or such Warrant Stock under any applicable Blue Sky or state
securities law then in effect, or (b) an opinion of counsel, satisfactory to the
Company, that such registration and qualification are not required.

      Without limiting the generality of the foregoing, unless the offering and
sale of the Warrant Stock to be issued upon the particular exercise of the
Warrant shall have been effectively registered under the Act, the Company shall
be under no obligation to issue the shares covered by such exercise unless and
until the Registered Holder shall have executed an investment letter in form and
substance satisfactory to the Company, including a warranty at the time of such
exercise that it is acquiring such shares for its own account, for investment
and not with a view to, or for sale in connection with, the distribution of any
such shares, in which event the Registered Holder shall be bound by the
provisions of the following legend or a legend in substantially similar form
which shall be endorsed upon the certificate(s) evidencing the Warrant Stock
issued pursuant to such exercise:

            "The shares represented by this certificate have been taken for
            investment and they may not be sold or otherwise transferred by any
            person, including a pledgee, in the absence of an effective
            registration statement for the shares under the Securities Act of
            1933, as amended, or an opinion of counsel satisfactory to the
            Company that an exemption from registration is then available."

                                       3

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      In addition, without limiting the generality of the foregoing, the Company
may delay issuance of the Warrant Stock until completion of any action or
obtaining of any consent, which the Company deems necessary under any applicable
law (including without limitation state securities or "blue sky" laws).

      5. Liquidating Dividends. If the Company pays a dividend or makes a
distribution on the Common Stock payable otherwise than in cash out of earnings
or earned surplus (determined in accordance with generally accepted accounting
principles) except for a stock dividend payable in shares of Common Stock (a
"Liquidating Dividend"), then the Company will pay or distribute to the
Registered Holder of this Warrant, upon the exercise hereof, in addition to the
Warrant Stock purchased upon such exercise, the Liquidating Dividend which would
have been paid to such Registered Holder if it had been the owner of record of
such shares of Warrant Stock immediately prior to the date on which a record is
taken for such Liquidating Dividend or, if no record is taken, the date as of
which the record holders of Common Stock entitled to such dividends or
distribution are to be determined.

      6. Notices of Record Date, etc. In case:

            (a) the Company shall take a record of the holders of its Common
Stock (or other stock or securities at the time deliverable upon the exercise of
this Warrant) for the purpose of entitling or enabling them to receive any
dividend or other distribution, or to receive any right to subscribe for or
purchase any shares of stock of any class or any other securities, or to receive
any other right, or

            (b) of any capital reorganization of the Company, any
reclassification of the capital stock of the Company, any consolidation or
merger of the Company with or into another corporation (other than a
consolidation or merger in which the Company is the surviving entity), or any
transfer of all or substantially all of the assets of the Company, or

            (c) of the voluntary or involuntary dissolution, liquidation or
winding-up of the Company, then, and in each such case, the Company will mail or
cause to be mailed to the Registered Holder of this Warrant a notice specifying,
as the case may be, (i) the date on which a record is to be taken for the
purpose of such dividend, distribution or right, and stating the amount and
character of such dividend, distribution or right, or (ii) the effective date on
which such reorganization, reclassification, consolidation, merger, transfer,
dissolution, liquidation or winding-up is to take place, and the time, if any is
to be fixed, as of which the holders of record of Common Stock (or such other
stock or securities at the time deliverable upon the exercise of this Warrant)
shall be entitled to exchange their shares of Common Stock (or such other stock
or securities) for securities or other property deliverable upon such
reorganization, reclassification, consolidation, merger, transfer, dissolution,
liquidation or winding-up. Such notice shall be mailed at least ten (10) days
prior to the record date or effective date for the event specified in such
notice.

      7. Reservation of Stock. The Company will at all times reserve and keep
available, solely for issuance and delivery upon the exercise of this Warrant,
such shares of Warrant Stock

                                       4

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and other stock, securities and property, as from time to time shall be issuable
upon the exercise of this Warrant.

      8. Replacement of Warrants. Upon receipt of evidence reasonably
satisfactory to the Company of the loss, theft, destruction or mutilation of
this Warrant and (in the case of loss, theft or destruction) upon delivery of an
indemnity agreement (with surety if reasonably required) in an amount reasonably
satisfactory to the Company, or (in the case of mutilation) upon surrender and
cancellation of this Warrant, the Company will issue, in lieu thereof, a new
Warrant of like tenor.

      9. Termination In Certain Events

      In the event of a sale of substantially all the assets of the Company or a
merger or consolidation of the Company with or into any other entity (other than
a merger the sole purpose of which is to change the state of incorporation of
the Company) or a dissolution or the adoption of a plan of liquidation of the
Company, this Warrant shall terminate on the effective date of such sale,
merger, consolidation, dissolution or adoption (the "Effective Date") and become
null and void, provided, however, that if this Warrant shall not have otherwise
terminated or expired, the Registered Holder hereof shall have the right until
5:00 p.m Eastern Standard time on the day immediately prior to the Effective
Date to exercise its rights hereunder to the extent not previously exercised.

      10. Transfers, etc.

            (a) The Company will maintain a register containing the names and
addresses of the Registered Holders of this Warrant. Any Registered Holder may
change its, his or her address as shown on the warrant register by written
notice to the Company requesting such change.

            (b) This Warrant shall not be transferable by the Registered Holder
and shall be exercisable only by the Registered Holder. Without the prior
written consent of the Company, the Warrant shall not be assigned, pledged or
hypothecated in any way (whether by operation of law or otherwise) and shall not
be subject to execution, attachment or similar process. Any attempted transfer,
assignment, pledge, hypothecation or other disposition of the Warrant or of any
rights granted hereunder contrary to the provisions of this Paragraph, or the
levy of any attachment or similar process upon the Warrant or such rights, shall
be null and void.

            (c) Until any transfer of this Warrant is made in the warrant
register, the Company may treat the Registered Holder of this Warrant as the
absolute owner hereof for all purposes; provided, however, that if and when this
Warrant is properly assigned in blank, the Company may (but shall not be
obligated to) treat the bearer hereof as the absolute owner hereof for all
purposes, notwithstanding any notice to the contrary.

      11. Mailing of Notices, etc. All notices and other communications from the
Company to the Registered Holder of this Warrant shall be mailed by first-class
certified or registered mail, postage prepaid, to the address furnished to the
Company in writing by the last Registered

                                       5

<PAGE>

Holder of this Warrant who shall have furnished an address to the Company in
writing. All notices and other communications from the Registered Holder of this
Warrant or in connection herewith to the Company shall be mailed by first-class
certified or registered mail, postage prepaid, to the Company at its offices at
129 Morgan Drive, Norwood, Massachusetts 02062, or such other address as the
Company shall so notify the Registered Holder.

      12. No Rights as Stockholder. Until the exercise of this Warrant, the
Registered Holder of this Warrant shall not have or exercise any rights by
virtue hereof as a stockholder of the Company.

      13. Change or Waiver. Any term of this Warrant may be changed or waived
only by an instrument in writing signed by the party against which enforcement
of the change or waiver is sought.

      14. Headings. The headings in this Warrant are for purposes of reference
only and shall not limit or otherwise affect the meaning of any provision of
this Warrant.

      15. Governing Law. This Warrant will be governed by and construed in
accordance with the laws of the State of Delaware.

                              Apogee Technology, Inc.

                              By ____________________________________
[Corporate Seal]                    David Spiegel, President
ATTEST:

____________________________

                                       6

<PAGE>

                                    EXHIBIT I

                                  PURCHASE FORM

To:   Apogee Technology, Inc.
      129 Morgan Drive
      Norwood, MA 02062             Dated:

      The undersigned pursuant to the provisions set forth in the attached
Warrant (No. ______), hereby irrevocably elects to purchase ______ shares of the
Common Stock (the "Common Stock") covered by such Warrant and herewith makes
payment of $ ____, representing the full purchase price for such shares at the
price per share provided for in such Warrant.

      The undersigned is aware that the Common Stock has not been registered
under the Securities Act of 1933, as amended (the "1933 Act") or any state
securities laws. The undersigned understands that the reliance by the Company on
exemptions under the 1933 Act is predicated in part upon the truth and accuracy
of the statements of the undersigned in this Purchase Form.

      The undersigned represents and warrants that (1) it has been furnished
with all information which it deems necessary to evaluate the merits and risks
of the purchase of the Common Stock; (2) it has had the opportunity to ask
questions concerning the Common Stock and the Company and all questions posed
have been answered to its satisfaction; (3) it has been given the opportunity to
obtain any additional information it deems necessary to verify the accuracy of
any information obtained concerning the Common Stock and the Company; and (4) it
has such knowledge and experience in financial and business matters that it is
able to evaluate the merits and risks of purchasing the Common Stock and to make
an informed investment decision relating thereto.

      The undersigned hereby represents and warrant that it is purchasing the
Common Stock for its own account for investment and not with a view to the sale
or distribution of all or any part of the Common Stock.

      The undersigned understands that because the Common Stock has not been
registered under the 1933 Act, it must continue to bear the economic risk of the
investment for an indefinite time and the Common Stock cannot be sold unless the
Common Stock is subsequently registered under applicable federal and state
securities laws or an exemption from such registration is available.

      The undersigned agrees that it will in no event sell or distribute or
otherwise dispose of all or any part of the Common Stock unless (1) there is an
effective registration statement under the 1933 Act and applicable state
securities laws covering any such transaction involving the Common Stock or (2)
the Company receives an opinion of its legal counsel (concurred in by legal
counsel for the Company) stating that such transaction is exempt from
registration or the Company otherwise satisfies itself that such transaction is
exempt from registration.

                                       7

<PAGE>

      The undersigned consents to the placing of a legend on its certificate for
the Common Stock stating that the Common Stock has not been registered and
setting forth the restriction on transfer contemplated hereby and to the placing
of a stop transfer order on the books of the Company and with any transfer
agents against the Common Stock until the Common Stock may be legally resold or
distributed without restriction.

      The undersigned understands that at the present time Rule 144 of the
Securities and Exchange Commission (the "SEC") may not be relied on for the
resale or distribution of the Securities. The undersigned understands that the
Company has no obligation to the undersigned to register the Common Stock with
the SEC and has not represented that it will register the Common Stock.

      The undersigned has considered the Federal and state income tax
implications of the exercise of the Warrant and the purchase and subsequent sale
of the Common Stock.

                                          ____________________________

                                          Dated: _____________________

                                       8

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