Exhibit 10.21

                              EMPLOYMENT AGREEMENT



     This Agreement is made effective as of October 1, 2002 by and between
Circuit Research Labs, Inc., an Arizona Corporation (the "Corporation"), and
Phillip T. Zeni (the "Employee").

     WHEREAS, the Corporation desires to retain the services of the Employee in
the capacity of its Executive Vice President and Chief Operating Officer; and

     WHEREAS, the Corporation wishes to prevent Employee from pursuing other
employment opportunities, which is only possible if the Corporation commits to
employ Employee for an extended term.

NOW THEREFORE, IT IS AGREED AS FOLLOWS:

Section 1.  Employment.  The Corporation agrees to employ the Employee and the
Employee agrees to accept the employment described in this Agreement.

Section 2.  Duties.  The Employee shall serve as Executive Vice President and
Chief Operating Officer of the Corporation, with such duties as are customarily
associated with such position. The Employee shall have such additional duties,
including performance of such duties and holding such offices or positions with
subsidiaries and affiliates of the Corporation, as shall be reasonably requested
of him from time to time by the President or Board of Directors of the
Corporation.

Section 3.  Extent of Services.  The Employee shall devote substantially all of
his working time, attention, and energies to the performance of his duties.  The
Employee  shall at all times faithfully and to the best of his ability perform
his duties under this Agreement.  The duties shall be rendered at the
Corporation's offices in Tempe, Arizona and San Leandro, California and at such
temporary locations as assigned by the Board of Directors of the Corporation for
the purpose of conducting Corporation business.

Section 4.  Term.  The term of this Agreement shall begin on October 1, 2002
and, unless sooner terminated for cause as set forth elsewhere in the Agreement,
shall continue until May 31, 2005.  It shall thereafter continue until either
Corporation or Employee terminates this Agreement on 90 days notice to the
other.  This Agreement shall not give the Employee any enforceable right to
employment beyond this term.

Section 5.  Compensation.

5.1 Base Compensation.  The Employee will receive a base salary of not less than
$175,000 per year, payable one-half in cash and one-half in restricted common
stock of the Corporation.

          5.1.1  The cash portion of Employee's base salary will be payable in
accordance with the Corporation's standard payroll procedures.  The entire
portion of Employee's base salary is subject to all applicable withholding and
payroll taxes, which, to the extent they are payable to the Employee, shall be
deducted from the cash portion of the base salary.

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Employment Agreement
Circuit Research Labs, Inc.
Phillip T. Zeni

          5.2.2  The stock portion of Employee's base salary shall be payable by
the Corporation determining as of the end of each calendar month the total
salary payable in stock to Employee for that month.  The Corporation shall then
determine the average price per share of stock of the Corporation on the
over-the-counter market for the same month.  On or before the tenth day of
the following month the Corporation shall issue to Employee that number of
restricted common shares of the Corporation which is the amount due to Employee
for the month divided by the average cost per share for that month.  Employee
agrees that he is acquiring the common stock of the Corporation as an investment
with no present intention of selling, transferring or redistributing the same,
and that he is an affiliate of the Corporation and will be entitled to sell the
common stock of the Corporation only pursuant to Rule 144 of the Securities and
Exchange Commission or another available exemption from registration under the
securities laws.

          5.3.3.  The Employee is eligible for performance based bonuses, but
there is no assurance or expectation that bonuses will be paid.  Bonuses will be
paid, if at all, at the sole discretion of the Board of Directors.

5.2 Benefits.  The Employee shall receive medical and dental insurance and all
other fringe benefits provided to full-time employees of the Corporation.  The
Employee shall receive two (2) weeks of paid vacation per year.

5.3 Expenses.  The Corporation shall reimburse the Employee for reasonable
out-of-pocket expenses incurred by the Employee in fulfilling his duties.  The
Corporation shall provide the employee with office facilities, equipment,
supplies, and staff.

Section 6.  Termination.

6.1 For Cause.  The Corporation may terminate the Employee's employment at any
time "for cause" with immediate effect upon delivering written notice to the
Employee.  For purposes of this Agreement, "for cause" shall be limited to:  (a)
embezzlement, theft, larceny, material fraud, or other acts of dishonesty; (b)
material violation by employee of any of his obligations under this Agreement;
(c) conviction of or entrance of a plea of guilty or nolo contendere to a felony
or other crime which has or may have a material adverse effect on the Employee's
ability to carry out his duties under this Agreement or upon the reputation of
the Corporation; (d) repeated insubordination after written warning by the
Board; or (e) material continuing failure by the Employee to perform the duties
described in Section 2 above in a quality and professional manner for at least
sixty days after written warning by the Board of Directors.  Upon termination
for cause, the Corporation's sole and exclusive obligation will be to pay the
Employee his compensation earned through the date of termination, and the
Employee shall not be entitled to any compensation after the date of
termination.

6.2 Upon Death.  In the event of the Employee's death during the term of this
Agreement, the Corporation's sole and exclusive obligation will be to pay to the
Employee's estate the Employee's compensation earned through the date of death.

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6.3 Upon Disability.  The Corporation may terminate the Employee's employment
upon the Employee's total disability.  The Employee shall be deemed to be
totally disabled if he is unable to perform his duties under this Agreement by
reason of mental or physical illness or accident for a period of three
consecutive months (the date of finding of disability of Employee shall be three
months following the first day the Employee is unable to work).  Upon
termination by reason of the Employee's disability, the Corporation's sole and
exclusive obligation will be to pay the Employee under the Corporation's
disability policy or his compensation for one year following such termination,
whichever is greater.

6.4  Without Cause.  If the Corporation terminates Employee without cause,
Employee shall receive all compensation and benefits for the full term of this
Agreement until May 31, 2005 as set forth in Section 5.  Failure to pay such
compensation and benefits shall relieve Employee of his duties under section 7
of this Agreement, without limiting the rights of Employee to recover all sums
due under this section 6.4.

Section 7.  Covenant Not to Compete.

7.1 Covenant.  During the term of this Agreement, and for such period after the
expiration of the term as the Employee continues to be employed by the
Corporation, and for a one year period after the Employee's employment with the
Corporation has been terminated by either party (whichever constitutes the
longer period), the Employee will not:

          7.1.1 enter into or attempt to enter into the "Restricted Business"
(as defined below) in the continental United States:

          7.1.2 use contracts, proprietary information, trade secrets,
confidential information, customer lists, mailing lists, goodwill, or other
intangible property used or useful in connection with the Corporation's
business.

7.2  Restricted Business.  The term "Restricted Business" means the design and
manufacture of audio processing equipment and the design and manufacture of
automation equipment for the radio and television broadcast industry.
Nevertheless, the Employee may own not more than five percent of the outstanding
equity securities of a corporation that is engaged in the Restricted Business if
the equity securities are listed for trading on a national stock exchange or are
registered under the Securities Exchange Act of 1934.

7.3  Existing Employment.  The Corporation acknowledges that Employee currently
owns and operates a business in a related field.  Employee agrees that his
existing business will be operated by a manager for so long as Employee owns the
business and the Corporation agrees that Employee may render services for such
business without violation of the non-competition agreements and full-time
employment agreements contained herein so long as Employee devotes full time
efforts to his employment pursuant to this Agreement.

Section 8.  Confidentiality.  The Employee acknowledges that he will develop and
be exposed to information that is or will be confidential and proprietary to the
Corporation.  The information includes customer lists, marketing plans, pricing
data, product plans, software, and other

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intangible information.  Such information shall be deemed confidential to the
extent not generally known within the trade.  The Employee agrees to make use of
such information only in the performance of his duties under this Agreement, to
maintain such information only in the performance of his duties under this
Agreement, to maintain such information in confidence and to disclose the
information only to persons with a need to know.

Section 9.  Waiver.  The waiver by the Corporation of the breach of any
provision of this Agreement by the Employee shall not operate or be construed as
a waiver of any subsequent breach by the Employee.

Section 10.  Notices.  Any notices permitted or required under this Agreement
shall be deemed given upon the date of personal delivery or forty-eight (48)
hours after deposit in the United States mail, postage fully prepaid, return
receipt requested, addressed to the Corporation at:

               2522 West Geneva Drive
               Tempe, Arizona 85282

Addressed to the Employee at:

               7878 E. Desert Cove
               Scottsdale, AZ 85260

or any other address as any party may, from time to time, designate by notice
given in compliance with this Section.

Section 11.  Law Governing.  This Agreement shall be governed by and construed
in accordance with the laws of the State of Arizona.

Section 12.  Titles and Captions.  All section titles or captions contained in
this Agreement are for convenience only and shall not be deemed part of the
context nor effect the interpretation of this Agreement.

Section 13.  Entire Agreement.  This Agreement contains the entire understanding
between and among the parties with respect to the subject matter hereof and
supersedes any other prior understandings and agreements among them respecting
the subject matter of this Agreement.

Section 14.  Attorney Fees.  In the event an arbitration, suit or action is
brought by any party under this Agreement to enforce any of its terms, or in any
appeal therefrom, it is agreed that the prevailing party shall be entitled to
reasonable attorneys fees to be fixed by the arbitrator, trial court, and or
appellate court.

Section 15.  Pronouns and Plurals.  All pronouns and any variations thereof
shall be deemed to refer to the masculine, feminine, neuter, singular, or plural
as the identity of the person or persons may require.

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Section 16.  Arbitration.  If at any time during the term of this Agreement any
dispute, difference, or disagreement shall arise upon or in respect of the
Agreement, and the meaning and construction hereof, every such dispute,
difference, and disagreement shall be referred to a single arbiter agreed upon
by the parties, or if no single arbiter can be agreed upon, an arbiter or
arbiters shall be selected in accordance with the rules of the American
Arbitration Association and such dispute, difference, or disagreement shall be
settled by arbitration in accordance with the then prevailing commercial rules
of the American Arbitration Association, and judgment upon the award rendered by
the arbiter may be entered in any court having jurisdiction thereof.

Section 17.  Presumption.  This Agreement or any section thereof shall not be
construed against any party due to the fact that said Agreement or any section
thereof was drafted by such party.

Section 18.  Further Action.  The parties hereto shall execute and deliver all
documents, provide all information and take or forbear from all such action as
may be necessary or appropriate to achieve the purposes of the Agreement.

Section 19.  Parties in Interest.  Nothing herein shall be construed to be to
the benefit of any third party, nor is it intended that any provision shall be
for the benefit of any third party.

Section 20.  Separate Counsel.  The parties acknowledge that the Corporation has
been represented in this transaction, that any attorneys have not represented
the Employee in this transaction, and the Employee has been advised that it is
important for the Employee to seek separate legal advice and representation in
this matter.



Circuit Research Labs, Inc.
An Arizona Corporation


By:   /s/ C. Jayson Brentlinger              /s/ Phillip T. Zeni
      ----------------------------           ---------------------------
Name: C. Jayson Brentlinger                  Phillip T. Zeni, Employee
Title: President, CEO and Chairman


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