Audio Research VT150 // Preowned / Tube Monoblock Amplifiers

The Audio Research VT-150 is the tube monoblocks amplifier for audiophiles who believe power, finesse, and musicality shouldn’t just coexist—they should dominate. Introduced in the 1990s, the VT-150 combines classic tube warmth with modern engineering precision, delivering a staggering 130 watts per channel in monoblock configuration. If you’ve got power-hungry speakers, a thirst for dynamics, and a soft spot for glowing tubes, the VT-150 is here to flex its sonic muscles while cradling your music in the warm embrace of tube magic. Ships in the original boxes. Replaced several capacitors in feedback circuit Cleaned bias switches Adjusted bias for each output tube Repaired bad connections on bias switch wiring #0001: Replaced one 12ax7 and two 6550 tubes in power supply with strong tubes in unit  #0002: Replaced one 12ax7 and 6550 tubes in power supply with strong tubes  All remaining tubes test strong Replaced missing screws in chassis cover #0001: 131 watts RMS into 8 Ohms @0.23%THD+