Audio Products

We call it "Hybrid Drive" because that’s how it works.  As in the REF110, a JFET input (for low noise) feeds a 6922 dual triode gain stage, which in turn feeds a 6H30 dual triode cathode follower which drives the outputs through our proprietary coupling capacitors (first used in our REF3 preamp).  This vacuum-tube input/driver arrangement sets the stage for superbly musical perform...[more]

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Incorporating the best electronic elements of the original ProLogue Four and Five, plus selected ground-breaking features from the more advanced DiaLogue Series, the next generation ProLogue Premium Series is an engineering marvel — a single, stereo power amplifier that sets a new benchmark in high-performance audio with the following features: *Innovative, new Adaptive AutoBias circu...[more]

The thick front panel simply has an On/Off switch and corresponding LED and does not contain the vacuum-fluorescent display found on its more powerful siblings.  The attractive internal layout is similar in appearance to the REF210 with the right and left channel boards mounted horizontally, flanking the transformers mounted on a raised central channel running front-to-back. A small LCD displ...[more]

When Introduced i, the REF110 power amplifier proved to be one of the most respected and popular stereo power amps ever produced by Audio Research. Now it is superseded by the new REF150, offering more power, more sonic finesse, quieter operation and a more contemporary appearance. Having identical outer dimensions as the REF110, the new REF150 has much more packed into its chassis. Refined fro...[more]

The REF75 is a great looking amplifier, slightly reminiscent of our older classic designs.  The front panel has two illuminated analog power/bias meters, one for each channel.  Under each meter is a knob to switch from power output to bias monitoring for each output tube.  Bias adjustment points are accessed from the front panel, too, offering real convenience.  The outer di...[more]

The chassis, circuit layout and feature set of the VS110 are almost identical to the VS55, but scaled up to accomodate the greater power output. The chassis itself measures 17 1/2" W by 19" D, and features an anodized, natural-finish top plate labeled with tube location/type, output-tube bias access points and the inset Audio Research logo. The chassis front holds a rocker-style power switch and g...[more]

The VS115 revisits the classic look of the VS110 with its open architecture and natural anodized top plate – now more ventilated for better heat dissipation. Drawing upon the successful REF110 input stage design, the VS115 uses a FET input with two 6H30 triodes in each channel for gain and as a cathode follower-driver for the 6550C-equipped output stage. This allows both balanced and single-ended...[more]

The VS55 makes a wonderful companion to the recently introduced SP16 preamplifier. Together, these exciting new companion products enable you to assemble a true Audio Research music system at a more reasonable cost. Like the SP16, the VS55 represents a fresh, new design direction for Audio Research. Using an open (rather than fully enclosed) chassis architecture, the VS55 features a milled, anodiz...[more]

Its rated output of 50 watts per channel does not convey the VS60's ability to drive power-hungry, low-impedance loudspeakers. Audio Research designed the VS60 with the finest full-range speakers, not compact monitors. Dynamics are lifelike with a sense of ease normally associated with larger amplifiers. Yes, its resolving power is surprising, allowing you to hear details that were previously hidd...[more]