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EXHIBIT A
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Agreement of Joint Filing
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The undersigned hereby agree that a single Schedule 13G (or any amendment
thereto) relating to the Common Stock of Sonic Innovations, Inc. shall be filed
on behalf of each of the undersigned and that this Agreement shall be filed as
an exhibit to such Schedule 13G.
Dated: February 14, 2001
Entities:
Accel IV L.P.
Accel Keiretsu L.P.
Accel Investors '95 L.P.
Accel IV Associates L.P.
Accel Partners & Co. Inc. By: /s/ X. Xxxxxx Sednaoui
Xxxxxxx X. Xxxxxxxxx Partners ----------------------------------
Xxxxxx Family Partnership L.P. G. Xxxxxx Sednaoui, Attorney-in-fact
for above-listed entities
Individuals:
Xxxxx X. Xxxxxx
Xxxx X. Xxxxx
Xxxxxx X. Xxxx, III
Xxxx X. Xxxxxxxxxxxx
Xxxxxx X. Xxxxxxxxx
X. Xxxxxx Sednaoui By: /s/ X. Xxxxxx Sednaoui
Xxxxx X. Xxxxxx ----------------------------------
X. Xxxxxx Sednaoui, Individually and as
Attorney-in-fact for above-listed individuals
