Adcom GTP-860 ll Preamplifier Processor-NOT TESTED. Powers On!

ADCOM Digital GTP-740 AC-3 Tuner/Preamplifier - Tested and Working

Adcom GTP-602 Stereo Preamplifier - Tested - in Good Condition

ADCOM GTP-830 Surround Sound Processor Preamplifier 120/240v w/Remote--Works

Adcom GTP-400 Pre-Amp/Processor Amplifier - clean

Vintage Adcom GFP- 555 II Preamplifier

Vintage Adcom GFP-555 II Stereo Preamplifier - Tested & Working - Audiophile

Adcom GFA-5400 Amplifier & GTP-450 Tuner/Preamplifier Stack - Power Tested ONLY