Adcom GTP-500 II Tuner Preamplifier & GFS-6 Speaker Selector Combo - Tested

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

Vintage ADCOM Model : GFP- 555 II Preamplifier - Clean & Good Working

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

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

Adcom GFP 555 Stereo Preamplifier. Tested Working

Adcom GTP-450 Stereo Tuner/Preamplifier GTP450 Powers On READ!

Adcom Digital GTP-750 AC-3 DTS Tuner/ Preamplifier 120V 60Hz Power Tested