The Audio Research VT100 Mk II is a 100 watt all tube, balanced stereo power amplifier which retails for $4995. It uses two matched pairs of 6550 output tubes per channel, and four 6922 twin triode tubes per channel. It also incorporates a fully regulated, 540-joule power supply, distributed between Save audio research vt100 to get e-mail alerts and updates on your eBay Feed. + Items in search results New Listing audio research VT100MK3 Stereo Power Amplifier 120V Working Properly F/S (d627 LOOKING FOR A QUICK LOCAL SALE! MAKE AN OFFER! Audio Research VT-50 Tube Power amplifier for sale! Built like a tank. At 50W/Channel, this amp delivers precise midrange and treble unlike your typical "rounded" tube amp, with accurate and powerful bass. Professional audio solutions from d&b audiotechnik. d&b provides professional audio solutions to accurately transfer passions through high end quality speech and music reproduction. d&b is internationally regarded as a leading company for sound reinforcement systems in installed and mobile applications, with a reputation for quality of construction, standard of service, system integration Audio Research Ultimate Repair, Service Schematics & Operation Manuals 390 PDF on DVD View and Download Audio Research VT100 user manual online. Stereo power amplifier. VT100 Amplifier pdf manual download. The VT50 is a stereo amp rated at 45 watts per channel. Are the amps bridged or are you planning to bridge them. If so, don't do it. I've spoken with AR and although you can bridge them they stongly suggested that you don't. (But I guess they didn't make it into the '90s now, did they?) Audio Research isn't one of them. They make gear that just flat-out works, with nary a burble, a flutter, or a pop to be experienced. The digital volume, balance, and source-selector controls on the Reference 1 were just as sure and reliable as any manual control I've ever used. Abbingdon Music Research / iFi Audio by van Alsti