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HOUSTON, Dec. 15 /PRNewswire/ — Input/Output, Inc. (NYSE: IO) announced
today that it will host a real-time webcast of its second quarter earnings
release conference call. This webcast has been scheduled for Dec. 20th 2000
at 9:00 am Central Standard Time. The earnings release will be issued before
the market opens.

This live broadcast of the I/O quarterly conference call will be available
on line at www.i-o.com or 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 there will be a replay of
the webcast for one week after the original call.

There will also be a replay of the conference call for one week after the
original call. The phone number for the replay is 888/568-0157.

Input/Output, Inc. is an industry leader in seismic acquisition imaging
technology for land, marine, transition zone exploration, production and
reservoir monitoring. The Company specializes in driving to market technology
that creates value for the energy industry in the areas of 2D, 3D, 4D and
multi-component seismic data. Additional information on Input/Output, Inc. is
available on the Internet at www.i-o.com or contact us at ir@i-o.com.
SOURCE Input/Output, Inc.

CONTACT: Kim Fairweather, Marketing Communications Manager of
Input/Output, Inc., 281-552-3013, or Kim_Fairweather@i-o.com/