EXHIBIT 5.1

                                August 8, 2001

Symphonix Devices, Inc.
2331 Zanker Road
San Jose, CA 95131


         Re:  Symphonix Devices, Inc. Registration Statement on Form S-3

Ladies and Gentlemen:

         We have examined the Registration Statement on Form S-3 to be filed by
you with the Securities and Exchange Commission ("SEC") on August 8, 2001 (the
"Registration Statement"), in connection with the registration under the
Securities Act of 1933, as amended, of the resale of up to 14,336,020 shares of
your Common Stock (the "Shares"). As your legal counsel, we have examined and
are familiar with, the proceedings taken by you in connection with the sale of
the Shares.

         It is our opinion that the Shares have been validly issued, fully
paid and nonassessable.

         We consent to the use of this opinion as an exhibit to the Registration
Statement and further consent to the use of our name wherever appearing in the
Registration Statement, including the Prospectus constituting a part thereof,
and any amendments thereto.

                                        Very truly yours,

                                        WILSON SONSINI GOODRICH & ROSATI
                                        Professional Corporation

                                        /s/ WILSON SONSINI GOODRICH & ROSATI