EXHIBIT 99.1


                                  Certification
            Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
    (Subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United
                                  States Code)


     Pursuant to Section 906 of the  Sarbanes-Oxley Act of 2002 (subsections (a)
and (b) of Section 1350,  Chapter 63 of Title 18,  United States Code),  each of
the undersigned officers of Zoom Technologies, Inc., a Delaware corporation (the
"Company"),  does hereby certify, to the best of such officer's  knowledge and
belief, that:

(1)  Amendment No. 1 to the Quarterly  Report on Form 10-Q for the quarter ended
     March 31, 2002 (the "Form  10-Q") of the Company  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  Form  10-Q  fairly  presents,  in all
     materials  respects,  the financial  condition and results of operations of
     the Company.

Dated: August 7, 2002             By:    /s/ Frank B. Manning
                                  -------------------------------------------
                                      Frank B. Manning
                                      Chief Executive Officer


Dated: August 7, 2002             By:    /s/ Robert Crist
                                  -------------------------------------------
                                      Robert Crist
                                      Chief Financial Officer