Exhibit 2.4
                   FIRST AMENDMENT TO SHARE PURCHASE AGREEMENT


         This First Amendment to Share Purchase Agreement (the "Amendment") is
made and entered into as of the 8th day of April, 2002, by and among ClearOne
Communications Inc. (formerly, Gentner Communications Corporation), a Utah
corporation ("ClearOne"), Gentner Ventures, Inc., a Utah corporation
("Purchaser"), and those other persons set forth on the Signature Pages hereof
(collectively, the "Sellers").

         WHEREAS, the parties are party to that certain Share Purchase Agreement
relating to the purchase by Purchaser of all of the issued and outstanding share
capital of Ivron Systems, Ltd., dated October 3, 2001 (the "Agreement");

         WHEREAS, the parties recognize that certain of the intended benefits of
the Agreement have not materialized, and have therefore agreed to the following
amendments to the Agreement;

         NOW, THEREFORE, in consideration of the foregoing, and of other good
and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged by each of the parties, the parties hereby agree as follows:

1.       Terms not defined herein have the meanings set forth in the Agreement.

2.       All references to Gentner or Gentner Communications Corporation are
         hereby changed to ClearOne, or ClearOne Communications, Inc.

3.       Paragraphs (b), (c), (d), (e), (f), (g), and (h) of Clause 2.3 of the
         Agreement are hereby deleted in their entirety, and replaced with the
         following new paragraphs in Clause 2.3:

         (b) If and when the conditions set forth in the succeeding paragraphs
         of this clause 2.3(b) have been met, then promptly thereafter the
         Purchaser will deliver to the Seller an aggregate of up to 109,000
         shares (the "Periodic Shares") of ClearOne's common stock (as may be
         adjusted for any split, combination, subdivision, or any other similar
         adjustment after the date hereof) which shares will be issued to the
         Sellers on the basis set forth in the "Amended Shareholder Matrix", to
         be separately delivered to the Purchaser within five (5) days of the
         date of execution of this Amendment.

         (c) In the event that gross profits (the "Profit Targets") set forth
         below are achieved by ClearOne computed from March 15, 2002 and prior
         to or by the dates set forth below (each, a "Target Date") for sales of
         its "V-There"/"Vu-Link" set-top videoconferencing products,
         technologies, and variants and sub-elements thereof (including license
         products) (collectively, the "Product"), then the Sellers shall be
         entitled to receive the number of the Shares adjacent to a Target Date
         (the "Periodic Shares"), allocated in accordance with the Amended
         Shareholder Matrix. ClearOne hereby agrees that it shall deliver within
         fifteen (15) days following each Target Date (and within fifteen days
         of the end of each subsequent calendar quarter pursuant to Clause
         (d)(1), below) a statement showing the actual profits from the sale of
         Product during the preceding period (or calendar quarter, as


         applicable). The parties agree that Purchaser may deliver such
         statement to Michael Peirce on behalf of all Sellers.

- ---------------------------- -------------------------- ------------------------

                                                           Profit Targets from
        Target Date               Periodic Shares       Product Sales for Period

  March 15, 2002 through:
- ---------------------------- -------------------------- ------------------------
July 31, 2002                27,250                     US$1,687,500
- ---------------------------- -------------------------- ------------------------
January 15, 2003             27,250                     US$3,375,000
- ---------------------------- -------------------------- ------------------------
April 15, 2003               27,250                     US$5,062,500
- ---------------------------- -------------------------- ------------------------
July 15, 2003                27,250                     US$6,750,000
- ---------------------------- -------------------------- ------------------------

         (d) The following conditions shall apply to the issuance of Shares:

              (i)    To the extent that ClearOne exceeds Profit Targets by or
                     prior to a Target Date, no additional Periodic Shares will
                     be issued for exceeding such Profit Targets by or prior to
                     a Target Date (i.e. if by July 31, 2002, US$3,000,000 in
                     Profit Targets is achieved, 27,250 Periodic Shares will be
                     issued as set forth in subsection (ii), below. However, the
                     gross profits amounts in excess of the Profit Targets for
                     July 15, 2002 will be applied to achieving the Profit
                     Targets for succeeding Target Dates. Consistent with the
                     preceding sentences of this subsection, the parties agree
                     that the Profit Targets are aggregate targets such that the
                     amount applied in reaching a Profit Targets is also
                     credited towards the next Profit Targets. For example,
                     amounts applied in achieving the Profits Target for July
                     31, 2002 (e.g. US$1,687,500) will be counted towards the
                     Targets for January 15, 2003 (e.g. US$3,375,000), and
                     towards each successive Profit Target, thereafter. In
                     addition, if all Periodic Shares are not issued by July 15,
                     2003, but prior to June 30, 2005, then the parties shall
                     measure within fifteen (15) days following the end of each
                     calendar quarter, Profit Targets. If, during the preceding
                     calendar quarter, Profit Targets are achieved, then
                     corresponding Periodic Shares will be issued as set forth
                     above. Any Shares that are unissued as of June 30, 2005
                     will not, thereafter, be issued to the Sellers;

              (ii)   All Periodic Shares will be issued within thirty (30) days
                     of each Target Date, assuming that Profit Targets are
                     achieved; and

              (iii)  for purposes hereof, "Target Gross Profits" shall mean
                     Product revenues minus Product costs of goods sold, as such
                     terms are contemplated in U.S. generally accepted
                     accounting principles.

         (e)  ClearOne hereby covenants and agrees that it will use all
              commercially reasonable efforts to sell the Products.

         (f)  As soon as practicable following their issuance, the Periodic
              Shares will be registered for resale at the expense of ClearOne on
              an applicable registration form selected by ClearOne, under the
              Securities Act of 1933 (currently contemplated to be Form S-3).


         (g)  A number of Periodic Shares may be withheld by ClearOne for
              purposes of the payment of any taxes which may be assessed by any
              taxing authorities against ClearOne or the Purchaser, or other
              affiliated company, in connection with the payment of the Periodic
              Shares. The parties agree that each share will be deemed to have a
              value equal to the greater of (i) $12, or (ii) the closing price
              for ClearOne common stock on the last trading date prior the
              issuance of any Periodic Shares.

4.       Clause 5.4(a) is amended to read as follows, and renumbered as Clause
         5.4:

         The Shares will be issued in a private placement pursuant to Section
         4(2) of the Securities Act of 1933 to the Sellers. As soon as
         practicable following the issuance of the Shares, such shares will be
         registered for resale on an applicable registration form, under the
         Securities Act of 1933, currently contemplated to be Form S-3.

5.       Clause 5.4(b) is deleted in its entirety.

6.       References to "July Shares" appearing in the Agreement are amended by
         replacing each such reference with "Periodic Shares".

7.       Clause 7.9 of the Agreement is deleted in its entirety and replaced
         with the following new Clause 7.9:

         The liability of the Seller (if any) under the Warranties shall be
         limited to the total amount that may be paid hereunder as the Purchase
         Price, including any Periodic Shares (whether paid or unpaid). For
         purposes of this limitation, the value of such shares at the time of
         issuance shall be used to determine the extent of the limitation on
         liability.

8.       Clauses 7.10 (a) and (b) are deleted in their entirety and replaced
         with the following:

         (a) For purposes of satisfying the indemnification obligations of the
         Sellers set forth in Clause 13.1, Purchaser shall have the right to
         set-off against amounts or Periodic Shares owing pursuant to the
         Periodic Shares, allocated against each Shareholder in accordance with
         his/her/its pro-rata interest in the Periodic Shares.

         (b) The Purchaser shall have the option of recouping all or any part of
         any Adverse Consequences it may suffer by notifying the Sellers in
         writing of such Adverse Consequences (the "Set-Off Claim") stating (i)
         the amount of such Adverse Consequences, and (ii) the basis for such
         claim of Adverse Consequences in sufficient details for Sellers to
         evaluate the Set-Off Claim; Sellers shall have ten (10) days to
         evaluate and respond to Buyer's Set-Off Claim in writing. If the
         Sellers do not dispute Purchaser's Set-Off Claim, Purchaser shall be
         entitled to set off such claim against the Periodic Shares. In the
         event of a dispute regarding a Set-Off Claim, the parties will agree on
         an a mutually acceptable independent firm of chartered accountants who
         shall act as an expert and not an arbitrator and whose decision shall
         be final and binding (save in the case of manifest error). The number
         of Periodic Shares and shall be determined using a quotient, the
         numerator of which is the amount of the Set-Off Claim, and the


         denominator of which is the average closing price for the ten trading
         days prior to the date of the Set-Off Claim.

9.       Schedule 5.1 (11) is deleted in its entirety and replaced with the
         following:

         (11) Calculation of Profit Targets
         In relation to the calculation of Profit Targets in Clause 2.3 of the
         Agreement, ClearOne will act in good faith in accordance with U.S.
         generally accepted accounting principles in making the calculation of
         Targets.


10.      Schedule 5.1 (13) is deleted in its entirety.

11.      Schedule 5.2 (10) is deleted in its entirety and replaced with the
         following:

         (10) Calculations of Profit Targets
         In relation to the calculation of Profit Targets in Clause 2.3 of the
         Agreement, Purchaser will act in good faith in accordance with U.S.
         generally accepted accounting principles in making the calculation of
         Targets.


12.      Schedule 5.2 (12) is deleted in its entirety.

13.      Each Seller (i) understands that issuance of the Periodic Shares have
         not been, and will not be, registered under the Securities Act of 1933
         (the "Securities Act"), or under any state securities laws, and that
         they are being offered and sold in reliance upon federal and state
         exemptions for transactions not involving any public offering, (ii) is
         acquiring the Periodic Shares solely for its own account for investment
         purposes, and not with a view to the distribution thereof, and (iii) is
         an "Accredited Investor" as defined in the rules promulgated pursuant
         to the Securities Act, or is a sophisticated investor with knowledge
         and experience in business and financial matters.

14.      Except as provided in above, the Agreement shall remain in full force
         and effect with no amendment or modification.

15.      This Amendment shall be governed by and construed in accordance with
         the laws of Ireland.

16.      This Amendment may be executed in counterparts, all of which together
         shall constitute one and the same instrument.










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SIGNED SEALED AND DELIVERED by the said Mike Peirce in    /s/Michael Peirce
the presence of:


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SIGNED SEALED AND DELIVERED by the said Joe Stockton in   /s/Joe Stockton
the presence of:


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SIGNED SEALED AND DELIVERED by the said David Smyth in    /s/David Smyth
the presence of:


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SIGNED SEALED AND DELIVERED by Dave Nelson in the         /s/Dave Nelson
presence of:


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SIGNED SEALED AND DELIVERED by Alex Peirce in the         /s/Michael Peirce,
presence of:                                               attorney in fact for
                                                           Alex Peirce

========================================================= ======================
PRESENT when the common seal of Mentor Capital, Ltd.
was affixed hereto:                                       /s/Michael Peirce


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Executed as a Deed By Gentner Ventures, Inc.

By:/s/Randall J. Wichinski
         Vice President
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Executed as a Deed By ClearOne Communications, Inc.

By: /s/Frances Flood
       President and Chief
       Executive Officer


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