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HOUSTON, Mar 26, 2003 (BUSINESS WIRE) — Input/Output Inc. (NYSE:IO) announced
today that it will host a real-time webcast of its conference call to discuss
the appointment of its new chief executive officer. This webcast is scheduled
for March 31, 2003 at 3:30 p.m. Central Standard Time. The press announcement
naming the CEO is scheduled to be released the same day immediately after
markets close.

This live broadcast of the I/O conference call will be available online at
www.i-o.com or at www.streetevents.com. Listeners should go to the Web site at
least 15 minutes before the broadcast to register, download and install any
necessary audio software. In addition, the webcast will be available for replay
for one week after the original call.

To listen to the conference call via telephone, please contact Elisa Smith at
281/879-3593 for the dial-in number. There will also be a telephonic replay of
the conference call for one week after the original call. The phone number for
the replay is 800/839-2341 or toll 402/998-1192.

About Input/Output

Input/Output Inc. provides seismic acquisition imaging technologies that operate
on land, in marine and transition zone environments, on the sea bottom and in
wellbores. The Company’s products encompass the life of oil and gas fields, from
exploration and discovery through field abandonment. Use of Input/Output
technology enables the acquisition of better seismic images at reduced cost and
with a focus on reduced environmental impact. Additional information on
Input/Output Inc. is available on the Internet at www.i-o.com or contact us at
ir@i-o.com.

The information included herein contains forward-looking statements within the
meaning of Section 27A of the Securities Act of 1933 and Section 21E of the
Securities Exchange Act of 1934. Actual results may vary fundamentally from
those described in these forward-looking statements. All forward-looking
statements reflect numerous assumptions and involve a number of risks and
uncertainties. These risks and uncertainties include risk factors that are
disclosed by I/O from time to time in its filings with the Securities and
Exchange Commission.

CONTACT:
Input/Output Inc., Houston
Elisa Smith, 281/879-3593
esmith@i-o.com