Just seen this on Ebay... Im thinking its the same as a DD Z1 amp.
http://cgi.ebay.com/PRECISION-POWER-NEW-PPI-PDX-10K-AMP-10000-RMS-AMPLIFIER_W0QQitemZ110462408133QQcmdZViewItemQQptZCar_Amplifiers?hash=item19b81295c5
http://cgi.ebay.com/PRECISION-POWER-NEW-PPI-PDX-10K-AMP-10000-RMS-AMPLIFIER_W0QQitemZ110462408133QQcmdZViewItemQQptZCar_Amplifiers?hash=item19b81295c5