Ortec 428 Detector Bias Supply, 575A Amplifier and 850 Quad ScalePoinsett Auction & Realty, Inc.4.5(124)$4(4 bids)
Princeton Applied Research Model 128A Lock-In AmplifierPoinsett Auction & Realty, Inc.4.5(124)$3(3 bids)
DBX Model 20/20 Computerized Equalizer AnalyzerHeritage Gallery Auctions4.5(94)$50(1 bid)Mar 15, 2026
Scott Stereomaster 299-D 2-Channel Tube AmplifierKraft Auction Service4.4(830)$30(2 bids)Feb 28, 2026
Van Alstine Transcendence 3 Fet Valve PreamplifierKraft Auction Service4.4(830)$10(1 bid)Feb 28, 2026
Dynaco Van Alstine MOS-FET 120D Modified Stereo AmplifierKraft Auction Service4.4(830)$10Feb 28, 2026
