For Parts Audio Design Associates ADA PTM-6150 Six Channel A/B Power Amp

Audio Design Associates PF-2502 200w Solid State Power Amplifier

ADA Audio Design Associates PTM-850 Audio Distribution Amplifier 8x50W

Audio Design Associates ADA PF-201 POWER AMPLIFIER

Audio Design Associates PTM-650 6 Channel Amplifier Works Great

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

Ada Audio Design Associates Model ACC-48 Quad AC

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