Audio Research Model SP-3 Faceplate USED

Audio Research Vintage SP-3A SP3 Vacuum Tube Preamplifier

Chiro By Kinergetics Research C800 Dual Zona Tiene Pre Amp Processor

Rank Audio RA-210 Vintage Stereo Amplifier With Speakers

Audio Research EC-3 Faceplate USED

Vintage Audio Research Pre-Amp SP-4 in working condition

ART Pro Audio DJ PRE II Phono Turntable Preamp Pre-amplifier

A Pair Of Conn 40 Watt Tube Amplifier With RCA Jacks For Input. 2 Mono Units.