Audio Design Associates ADA PF-201 POWER AMPLIFIER

Audio Design Associates ADA PF-200 POWER AMPLIFIER

Audio Design Associates ADA PTM-6150 Six Channel A/B Power Amp (120-240 Volts)

Vintage Audio Design Associates ADA PT-200 Dual Channel Power Triangle Amplifier

ADA Audio Design Associates PTM-850 Multi-Channel Power Amplifier tested

Ada Audio Design Associates PTM-8100 8 Channel Power Amplifier [Tested]

Audio Design Associates ADA PTM-6150 6 Channel Power Amplifier Vintage

ADA Audio Design Associates PTM-850 Multi-Channel Power Amplifier