Exhibit 32.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

     In connection with the quarterly report of Circuit Research Labs, Inc. (the
"Company") on Form 10-QSB for the period ending March 31, 2004, as filed with
the Securities and Exchange Commission on the date hereof (the "Report"), I, C.
Jayson Brentlinger, Chief Executive Officer and President of the Company,
certify, to the best of my knowledge, pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

     (1)  The Report fully complies with the requirements of Section 13(a) or
          15(d) of the Securities Exchange Act of 1934; and

     (2)  The information contained in the Report fairly presents, in all
          material respects, the financial condition and results of operations
          of the Company for the periods presented.



                                           /s/ C. Jayson Brentlinger
                                           -------------------------
                                           C. Jayson Brentlinger
                                           Chief Executive Officer and President
                                           Circuit Research Labs, Inc.
                                           May 24, 2004


A signed original of this written statement required by Section 906 has been
provided to Circuit Research Labs, Inc. and will be retained by the corporation
and furnished to the Securities and Exchange Commission or its staff upon
request.