EXHIBIT 23.01 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (File nos. 333-72796 and 333-8994) of ESS Technology, Inc. of our reports dated January 24, 2003 relating to the financial statements and financial statement schedule, which appear in this Form 10-K. /s/PricewaterhouseCoopers LLP San Jose, California March 31, 2003