**REGISTRATIONRIGHTS AGREEMENT**

THIS REGISTRATION RIGHTS AGREEMENTis made as of September 29, 2010, by and between LOGIC Devices Incorporated, aCalifornia corporation, (the “Company”), and William J. Volz, a Californiaresident (collectively, the “Holder”).

RECITALS:

A.     TheCompany and the Holder have entered into a Stock Purchase Agreement dated as ofSeptember 29, 2010 (the “Purchase Agreement”) pursuant to which the Company hasagreed to sell, and the Holder has agreed to purchase (the “Purchase”) in theaggregate, 357,143 shares of the common stock, no par value per share (“CommonStock”), of the Company on the terms and conditions set forth in the PurchaseAgreement.

B.     It is acondition to the consummation of the Purchase that the Company and the Holderexecute and deliver a registration rights agreement with terms mutuallysatisfactory to the Company and the Holder.

AGREEMENTS:

NOW, THEREFORE, in considerationof the foregoing premises, the mutual covenants hereinafter contained, andother good and valuable consideration, the receipt and sufficiency of which arehereby acknowledged, the parties hereto agree as follows:

ARTICLE I

DEMANDREGISTRATIONS

1.1   REQUESTS FORREGISTRATION. Subject to the terms of this Agreement, the Holder (or anyassignee or transferee of a number of Registrable Securities equal to thenumber of Registrable Securities owned by the Holder on the date hereof) may,at any time after the date hereof and prior to the ten-year anniversary of thedate hereof, request registration under the Securities Act of 1933, as amended(the “Securities Act”) of all or part of their Registrable Securities. Within10 days after receipt of any such request, the Company will give written noticeof such request to all other holders of the Registrable Securities and willinclude in such registration all Registrable Securities with respect to whichthe Company has received written requests for inclusion therein within 15 daysafter the receipt of the Company’s notice. All registrations requested pursuantto this Section 1.1 are referred to herein as “Demand Registrations.”

1.2   NUMBER OFDEMAND REGISTRATIONS. The Holder will be entitled to request one DemandRegistration pursuant to which the Registrable Securities shall be registeredand in which the Company will pay all Registration Expenses. A registrationwill not count as the Demand Registration (i) until it has become effective(unless such Demand Registration has not become effective due solely to thefault of the holder requesting such registration) and (ii) unless the holder ofthe Registrable Securities  requested to be included in such registration(unless such holder is not so able to register such amount of the RegistrableSecurities due solely to the fault of such holder) are included; provided, however,that in any event the Company will pay all Registration Expenses in connectionwith any registration initiated as a Demand Registration subject to thisSection 1.2.

1.3   TYPE OFDEMAND REGISTRATION. A Demand Registration will be Short-Form Registrationwhenever any applicable form can be utilized. Otherwise, the DemandRegistration will be a Long-Form Registration. As long as the Company remainssubject to the reporting requirements of the Securities Exchange Act of 1934,as amended (the “Securities Exchange Act”), the Company will use its bestefforts to make Short-Form Registrations available for the sale of RegistrableSecurities.

1.4   PRIORITY ONDEMAND REGISTRATIONS. The Company will not include in any Demand Registrationany securities that are not Registrable Securities without the written consentof the holders of a majority of the Registrable Securities. If other securitiesare permitted to be included in a Demand Registration that is an underwrittenoffering and the managing underwriters advise the Company in writing that intheir opinion the number of Registrable Securities and other securitiesrequested to be included exceeds the number of Registrable Securities and othersecurities that can be sold in such offering, the Company will include in suchregistration, prior to the inclusion of any securities that are not RegistrableSecurities, the number of Registrable Securities requested to be included thatin the opinion of such underwriters can be sold, pro rata among the respectiveholders on the basis of the amount of Registrable Securities so requested to beincluded therein.

1.5   SELECTION OFUNDERWRITERS. The holders of a majority of the Registrable Securities includedin any Demand Registration will have the right to select the investmentbanker(s) and manager(s) to administer the offering and may, in theirdiscretion, elect not to have the Demand Registration underwritten.

1.6   OTHERREGISTRATION RIGHTS. Except as provided in this Agreement, prior to a DemandRegistration satisfying the requirements of Sections 1.1 and 1.2 hereof, theCompany will not grant to any person or entity the right to request the Companyto register any equity securities of the Company, or any securities convertibleor exchangeable into or exercisable for such securities, without the writtenconsent of the holders of a majority of the Registrable Securities.

1.7   TIMING OFDEMAND REGISTRATION. The holders of the Registrable Securities shall use theirrespective best efforts, to cooperate with the Company in timing theeffectiveness of a Demand Registration so as to (i) allow the Company toutilize the financial statements that it otherwise is required to prepare dueto the Company being subject to the reporting requirements of the SecuritiesExchange Act and (ii) minimize the necessity of having audited financialstatements prepared sooner after the end of its fiscal year than would berequired under the Securities Exchange Act or for periods other than its fiscalyear unless the effectiveness of the Demand Registration is delayed beyond thereasonable expectations of the Company and the holders of the RegistrableSecurities and through no fault of such holders.

ARTICLE II

PIGGYBACKREGISTRATIONS

2.1   RIGHT TOPIGGYBACK. Whenever the Company proposes to register any of its securitiesunder the Securities Act, other than pursuant to a Demand Registrationhereunder, and the registration form to be used may, under the Securities Act,be used for the registration of any Registrable Securities (a “PiggybackRegistration”), the Company will give prompt written notice to all holders ofthe Registrable Securities for which the registration form may be used of itsintention to effect such a registration and will include in such registrationall Registrable Securities (in accordance with the priorities set forth inSections 2.3 and 2.4 below) with respect to which the Company has receivedwritten requests for inclusion therein within 15 days after the receipt of theCompany’s notice.

2.2   PIGGYBACKEXPENSES. The Registration Expenses of the holders of Registrable Securitieswill be paid by the Company in all Piggyback Registrations.

2.3   PRIORITY ONPRIMARY REGISTRATIONS. If a Piggyback Registration is an underwritten primaryregistration on behalf of the Company and the managing underwriters advise theCompany in writing that in their opinion the number of securities requested tobe included in such registration exceeds the number that can be sold in suchoffering, the Company will include in such registration, (i) first, thesecurities that the Company proposes to sell and (ii) second, the RegistrableSecurities requested to be included in such registration and other securitiesrequested to be included in such registration pro rata among the holders of theRegistrable Securities and the other securities on the basis of the number ofsecurities so requested to be included therein.

2.4   PRIORITY ONSECONDARY REGISTRATIONS. If a Piggyback Registration is an underwrittensecondary registration on behalf of holders of the Company’s securities and themanaging underwriters advise the Company in writing that in their opinion thenumber of securities requested to be included in such registration exceeds thenumber that can be sold in such offering, the Company will include in such registration(i) first, the securities requested to included therein by the holdersrequesting such registration and the Registrable Securities requested to beincluded in such registration, pro rata among the holders requestingregistration and the holders of Registrable Securities on the basis of thenumber of securities so requested to be included therein, and (ii) second, theother securities requested to be included in such registration.

2.5   SELECTION OFUNDERWRITERS. If any Piggyback Registration is an underwritten offering, theselection of investment banker(s) and manager(s) for the offering will be inthe discretion of the Company.

2.6   OTHERREGISTRATIONS. If the Company has previously filed a registration statementwith respect to Registrable Securities pursuant to Article I or pursuant tothis Article II, and if such previous registration has not been withdrawn orabandoned, the Company will not file or cause to be effected any otherregistration of any of its equity securities or securities convertible orexchangeable into or exercisable for its equity securities under the SecuritiesAct (except on Form S-8 or any successor form), whether on its own behalf or atthe request of any holder or holders of such securities, until a period of atleast six months has elapsed from the effective date of such previousregistration except with respect to any Demand Registration that is made duringsuch six-month period that includes Registrable Shares that the holders thereofrequested to be included in any Piggyback Registration.

ARTICLE III

ADDITIONALAGREEMENTS AND REPRESENTATIONS

3.1   COMPANYHOLDBACK AGREEMENT. The Company agrees (i) not to effect any public sale ordistribution of its equity securities, or any securities convertible into orexchangeable or exercisable for such securities, during a period not to exceedseven days prior to and 90 days following the effective date of anyunderwritten Demand Registration or any underwritten Piggyback Registration(except as part of such underwritten registration or pursuant to registrationson Form S-8 or any successor form), if the underwriters managing the registeredpublic offering so request, and (ii) to cause each holder of its equitysecurities, or any securities convertible into or exchangeable or exercisablefor such securities, purchased from the Company (other than in a registeredpublic offering) to agree not to effect any public sale or distribution of anysuch securities during such period (except as part of such underwrittenregistration, if otherwise permitted, or except as permitted in Section 3.1), unlessthe underwriters managing the registered public offering otherwise agree.

3.2   HOLDERREGULATION M RESTRICTIONS. Each holder of Registrable Securities agrees not toeffect any public sale or distribution of equity securities of the Company, orany securities convertible into or exchangeable or exercisable for suchsecurities, unless such sale or distribution complies with Regulation M (or anysimilar provision then in force) under the Securities Exchange Act.

3.3   COMPANYREGULATION M RESTRICTIONS. The Company agrees not to effect any public sale ordistribution of its equity securities, or any securities convertible into orexchangeable or exercisable for such securities unless such sale ordistribution complies with Regulation M (or any similar provision then inforce) under the Securities Exchange Act.

3.4   BEST EFFORTS.Whenever the holders of Registrable Securities have requested that anyRegistrable Securities will be registered pursuant to this Agreement, theCompany will use its best efforts to effect the registration and the sale ofsuch Registrable Securities in accordance with the intended method ofdisposition thereof, and pursuant thereto, the Company will as expeditiously aspossible.

ARTICLE IV

REGISTRATIONPROCEDURES

Whenever the holders ofRegistrable Securities have requested that any Registrable Securities beregistered pursuant to this Agreement, the Company will use its best efforts toeffect the registration and the sale of such Registrable Securities inaccordance with the intended method of disposition thereof, and pursuantthereto, the Company will as expeditiously as possible:

A.     Prepareand file with the Securities and Exchange Commission a registration statementwith respect to such Registrable Securities and use its best efforts to causesuch registration statement to become effective (provided that, before filing aregistration statement or prospectus or any amendments or supplements thereto,the Company will furnish to the counsel or counsels of the holders of theRegistrable Securities covered by such registration statement copies of allsuch documents proposed to be filed);

B.     Prepareand file with the Securities and Exchange Commission such amendments andsupplements to such registration statement and the prospectus used inconnection therewith as may be necessary to keep such registration statementeffective for a period of not less than six months and comply with theprovisions of the Securities Act with respect to the disposition of allsecurities covered by such registration statement during such period inaccordance with the intended methods of disposition by the sellers thereof setforth in such registration statement;

C.     Furnish toeach seller of Registrable Securities such number of copies of suchregistration statement, each amendment and supplement thereto, the prospectusincluded in such registration statement (including each preliminary prospectus)and such other documents as such seller may reasonably request in order tofacilitate the disposition of the Registrable Securities owned by such seller;

D.     Use itsbest efforts to register or qualify such Registrable Securities under suchother securities or blue sky laws of such jurisdictions as any seller ofRegistrable Securities reasonably requests and do any and all other acts andthings that may be reasonably necessary or advisable to enable such seller toconsummate the disposition in such jurisdictions of Registrable Securitiesowned by such seller (provided that the Company will not be required to (i)qualify generally to do business in any jurisdiction where it would nototherwise by required to qualify but for this subparagraph, (ii) subject itselfto taxation in any such jurisdiction, or (iii) consent to general service ofprocess in any such jurisdiction);

E.      Notifyeach seller of such Registrable Securities, at any time when a prospectusrelating thereto is required to be delivered under the Securities Act, of thehappening of any event as a result of which the prospectus included in suchregistration statement contains an untrue statement of a material fact or omitsany fact necessary to make the statements therein not misleading, and, at therequest of any such seller, the Company will prepare a supplement or amendmentto such prospectus so that, as thereafter delivered to the purchasers of suchRegistrable Securities, such prospectus will not contain an untrue statement ofa material fact or omit to state any fact necessary to make the statementstherein not misleading;

F.      Causeall such Registrable Securities to be listed on each securities exchange onwhich similar securities issued by the Company are then listed, if any;

G.     Provide atransfer agent and registrar for all such Registrable Securities not later thanthe effective date of such registration statement;

H.     Enter intosuch customary agreements (including underwriting agreements, if any, incustomary form) and take all such other actions as the holders of a majority ofthe Registrable Securities being sold or the underwriters, if any, reasonablyrequest in order to expedite or facilitate the disposition of such RegistrableSecurities (including, without limitation, effecting a stock split or acombination of shares); and

I.       Makeavailable for inspection during normal business hours by any seller ofRegistrable Securities, any underwriter participating in any dispositionpursuant to such registration statement, and any attorney, accountant, or otheragent retained by any such seller or underwriter, all financial and otherrecords, pertinent corporate document and properties of the Company, and causethe Company’s officers, directors, employees, and independent accountants tosupply all information reasonably requested by any such seller, underwriter,attorney, accountant, or agent in connection with such registration statement.

ARTICLE V

REGISTRATION EXPENSES

5.1   RESPONSIBILITYOF COMPANY. All expenses incident to the Company’s performance of or compliancewith this Agreement, including, without limitation, all registration and filingfees, fees and expenses of compliance with securities or blue sky laws,printing expenses, messenger and delivery expenses, and fees and disbursementsof counsel for the Company and all independent certified public accountants,underwriters (excluding discounts and commissions) and other person or entityretained by the Company (all such expenses being herein called “RegistrationExpenses”) will be borne by the Company. The Company will also pay its internalexpenses (including, without limitation, all salaries and expenses of itsofficers and employees performing legal or accounting duties), the expense ofany annual audit or quarterly review, the expense of any liability insuranceand the expenses and fees for listing the securities to be registered on eachsecurities exchange on which similar securities issued by the Company are thenlisted.

5.2   FEES OFCOUNSEL. In connection with each Demand Registration, the Company willreimburse the holders of Registrable Securities covered by such registrationfor the reasonable fees and disbursements of one counsel chosen by the holdersof a majority of such Registrable Securities.

ARTICLE VI

INDEMNIFICATION

6.1   COMPANYOBLIGATIONS. The Company agrees to indemnify, to the extent permitted by law, eachholder of Registrable Securities, its trustees, beneficiaries, officers, anddirectors and each person or entity who controls such holder (within themeaning of the Securities Act) against all losses, claims, damages,liabilities, and expenses caused by any untrue or alleged untrue statement ofmaterial fact contained in any registration statement, prospectus, orpreliminary prospectus, or any amendment thereof or supplement thereto or anyomission or alleged omission of a material fact required to be stated therein,except insofar as the same are caused by or contained in any informationfurnished in writing to the Company by such holder expressly for use therein orwhich such holder failed to provide after being so requested or by suchholder’s failure to deliver a copy of the registration statement or prospectusor any amendments or supplements thereto after the Company has furnished suchholder with a sufficient number of copies of the same or which is otherwiseattributable of the negligence or willful misconduct of such holder. Inconnection with an underwritten offering, the Company will indemnify suchunderwriters, their officers and directors, and each person or entity whocontrols such underwriters (within the meaning of the Securities Act) to thesame extent as provided above with respect to the indemnification of theholders of Registrable Securities.

6.2   HOLDEROBLIGATIONS. In connection with any registration statement in which a holder ofRegistrable Securities is participating, each such holder will furnish to theCompany in writing such information and affidavits as the Company reasonablyrequests for use in connection with any such registration statement orprospectus and, to the extent permitted by law, will indemnify the Company, itsdirectors and officers, each person or entity who controls the Company (withinthe meaning of the Securities Act), against any losses, claims, damages,liabilities, and expenses resulting from any untrue or alleged untrue statementof material fact contained or required to be contained in the registrationstatement, prospectus or preliminary prospectus, or any amendment thereof orsupplement thereto or any omission or alleged omission of a material factrequired to be stated therein or necessary to make the statements therein notmisleading, but only to the extent that such untrue statement or omission iscontained or required to be contained in any information or affidavit sofurnished or required to be furnished in writing by such holder; provided thatthe obligation to indemnify will be individual and independent, not joint orseveral, among such holders of Registrable Securities and the liability of eachsuch holder of Registrable Securities will be in proportion to and limited tothe net amount received by such holder from the sale of Registrable Securitiespursuant to such registration statement.

6.3   NOTICE. Anyperson or entity entitled to indemnification hereunder will (i) give promptwritten notice to the indemnifying party of any claim with respect to which itseeks indemnification and (ii) unless in such indemnified party’s reasonablejudgment a conflict of interest between such indemnified and indemnifyingparties may exist with respect to such claim, permit such indemnifying party toassume the defense of such claim, with counsel reasonably satisfactory to theindemnified party. If such defense is assumed, the indemnifying party will notbe subject to any liability for any settlement made by the indemnified partywithout its consent (but such consent will not be unreasonably withheld). Anindemnifying party who is not entitled to, or elects not to, assume the defenseof a claim will not be obligated to pay the fees and expenses of more than onecounsel for all parties indemnified by such indemnifying party with respect tosuch claim, unless in the reasonable judgment of any indemnified party aconflict of interest may exist between such indemnified party and any other ofsuch indemnified parties with respect to such claim.

6.4   MISCELLANEOUS.The indemnification provided for under this Agreement will remain in full forceand effect regardless of any investigation made by or on behalf of theindemnified party or any officer, director, or controlling person or entity ofsuch indemnified party and will survive the transfer of securities. The Companyalso agrees to make such provisions, as are reasonably requested by anyindemnified party, for contribution to such party in the event the Company’s indemnificationis unavailable for any reason.

6.5   CONTRIBUTION.To the extent any indemnification by an indemnifying party is prohibited orlimited by law, the indemnifying party agrees to make the maximum contributionwith respect to any amounts for which it would otherwise be liable underArticle VI to the fullest extent permitted by law; provided, however, that (i)no contribution shall be made under circumstances where the maker would nothave been liable for indemnification under the fault standards set forth inArticle VI, (ii) no person guilty of fraudulent misrepresentation (within themeaning of the Section 11(f)  of the Securities Act) shall be entitled to anycontribution from any party hereto who was not guilty of such fraudulentmisrepresentation, and (iii) contribution (together with any indemnification orother obligations under this Agreement) by any holder of Registrable Securitiesshall be in proportion to and limited to the net amount received by such holderfrom the sale of Registrable Securities pursuant to the applicable registrationstatement (and each holder’s contribution obligations shall be individual andindependent and not joint and several).

ARTICLE VII

CURRENTPUBLIC INFORMATION

At all times after the Company hasfiled a registration statement with the Securities and Exchange Commissionpursuant to the requirements of either the Securities Act or the SecuritiesExchange Act and such registration statement has been declared effective, theCompany will file all reports required to be filed by it under the SecuritiesAct and the Securities Exchange Act and the rules and regulations adopted bythe Securities and Exchange Commission thereunder, and will take such furtheraction as any holder or holders of Registrable Securities may reasonablyrequest, all to the extent required to enable such holders to sell RegistrableSecurities pursuant to (i) Rule 144 adopted by the Securities and ExchangeCommission under the Securities Act (as such rule may be amended from time totime) or any similar rule or regulation hereafter adopted by the Securities andExchange Commission or (ii) a registration statement on Form S-2, Form S-3, orany similar registration statement form hereafter adopted by the Securities andExchange Commission. Upon request, the Company will deliver to such holders ofRegistrable Securities a written statement as to whether it has complied withsuch requirements.

ARTICLE VIII

DEFINITIONS

8.1   REGISTRABLESECURITIES. The term “Registrable Securities” means (i) any of the Company’sCommon Stock issued and sold to the Holder pursuant to the Purchase Agreement,and (ii) any Common Stock issued or issuable with respect to the securitiesreferred to in clause (i) whether or not by way of stock dividend or stocksplit or in connection with a combination of shares, recapitalization, merger,consolidation, or other reorganization. As to any particular RegistrableSecurities, such securities will cease to be Registrable Securities when theyhave (a) been effectively registered under the Securities Act and disposed ofin accordance with the registration statement covering them, (b) been sold tothe public in accordance with Rule 144 (or any similar provision then in force)under the Securities Act, or (c) been otherwise transferred and newcertificates for them not bearing a Securities Act restrictive legend have beendelivered by the Company. Whenever any particular securities cease to beRegistrable Securities, the holder thereof will be entitled to receive from theCompany, without expense, new certificates representing such Registrable Securitiesnot bearing a restrictive legend as set forth in the Purchase Agreement.

8.2   The term“Long-Form Registration” means a registration under the Securities Act on FormS-1 or any similar form.

8.3   The term“Short-Form Registration” means a registration under the Securities Act of FormS-2, Form S-3, or any similar form.

ARTICLE IX

MISCELLANEOUS

9.1   PRINCIPLES OFCONSTRUCTION. In this Agreement, unless otherwise stated or the contextotherwise requires, the following usages apply: (a) headings are inserted forconvenience of reference only and are not a part of, nor shall they affect anyconstruction or interpretation of this Agreement; (b) all references toarticles, sections, schedules, and exhibits are to articles, sections,schedules, and exhibits in or to this Agreement unless otherwise specified; (c)references to a statute shall refer to the statute and any successor statute,and to all regulations promulgated under or implementing the statute orsuccessor, as in effect at the relevant time; (d) references to a governmentalor quasi-governmental agency, authority, or instrumentality shall also refer toa regulatory body that succeeds to the functions of the agency, authority,instrumentality; (e) “including” means “including, but not limited to”; and (f)unless the context requires otherwise, all words used in this Agreement in thesingular number shall extend to and include the plural, all words in the pluralnumber shall extend to and include the singular and all words in any gendershall extend to and include all genders.

9.2   NOINCONSISTENT AGREEMENTS. The Company will not hereafter enter into anyagreement with respect to its securities which is inconsistent with the rightsgranted to the holders of Registrable Securities in this Agreement.

9.3   ADJUSTMENTSAFFECTING REGISTRABLE SECURITIES. The Company will not take any action orpermit any change to occur with respect to its securities which wouldmaterially and adversely affect the ability of the holders of Registrable Securitiesto include such Registrable Securities in a registration undertaken pursuant tothis Agreement or which would materially and adversely affect the marketabilityof such Registrable Securities in any such registration (including, withoutlimitation, effecting a stock split or a combination of shares).

9.4   SUCCESSORSAND ASSIGNS. All covenants and agreements in this Agreement by or on behalf ofany of the parties hereto will bind and inure to the benefit of the respectivesuccessors and assigns of the parties hereto whether so expressed or not. Inaddition, whether or not any express assignment has been made, the provisionsof this Agreement which are for the benefit of purchasers or holders ofRegistrable Securities are also for the benefit of, and enforceable by, anysubsequent holder of Registrable Securities. This Agreement is nottransferrable or assignable by the Company.

9.5   TERM. ThisAgreement shall terminate on the date that all securities that are RegistrableSecurities have ceased to be Registrable Securities pursuant to Section 8.1hereof.

9.6   NOTICES. Allnotices or other communications which are required or permitted hereunder shallbe in writing and sufficient if delivered personally, sent by confirmedfacsimile or email, sent by reputable overnight courier or sent by registeredor certified mail, postage prepaid, return receipt requested, addressed, in thecase of the Holder, to the address for such Holder set forth in the books andrecords of the Company and, in the case of the Company, to the attention of theChief Financial Officer at the address of the executive offices of the Companyset forth in the most recent filing of the Company under the SecuritiesExchange Act. Any such communication shall be deemed to have been given whendelivered if delivered personally or by confirmed facsimile or email, on thefirst business day after dispatch if sent by reputable overnight courier and onthe third business day after posting if sent by certified mail.

9.7   MODIFICATION.Neither this Agreement nor any provisions hereof shall be waived, modified,discharged, or terminated except by an instrument in writing signed by theparty against whom any such waiver, modification, discharge, or termination issought.

9.8   ENTIREAGREEMENT. This Agreement contains the entire agreement of the parties withrespect to the subject matter hereof and there are no representations,covenants, or other agreements except as stated or referred to herein.

9.9   SEVERABILITY.Each provision of this Agreement is intended to be severable from every otherprovision, and the invalidity or illegality of any portion hereof shall notaffect the validity or legality of the remainder hereof.

9.10   COUNTERPARTS.This Agreement may be executed in any number of counterparts, each of which whenexecuted and delivered shall be deemed an original, but all such counterpartsshall constitute one and the same instrument.

9.11   GOVERNINGLAW. This Agreement shall be governed by and construed in accordance with thelaws of the State of California.

IN WITNESS WHEREOF, the partieshereto have executed this Agreement as of the day and year first above written.

COMPANY:

LOGIC DEVICES INCORPORATED

A California Corporation

 

By:                                                   

Kimiko Milheim

Chief Financial Officer

PURCHASER:

                                                  

William J. Volz