Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in this Registration Statement on Form S-3 of our report dated March 16, 2005 relating to the financial statements, financial statement schedule, management’s assessment of the effectiveness of internal control over financial reporting and the effectiveness of internal control over financial reporting, which appears in Input/Output Inc.’s Annual Report on Form 10-K for the year ended December 31, 2004. We also consent to the references to us under the heading “Experts” in such Registration Statement.
PricewaterhouseCoopers LLP
Houston, TX 77002
March 24, 2005
