Audio Products

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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]

Simply put, the REF150 SE is a breakthrough in stereo power amplification.  Replacing the REF150—which was one of the most respected modern stereo amplifiers—was a daunting task, but it has been accomplished.  The REF150 SE offers more power, greater dynamic thrust, a more vivid and resolved presentation, greater finesse, and quieter operation.  It is the new benchmar...[more]

The Reference 210 presents a familiar yet distinctive appearance. The chassis is enclosed, with a thick front panel the same height and width as the VT100/VTM200, but with a vacuum-flourescent display screen like the one featured on the REF3 and REF610T. The chassis is 19.5" deep (plus handles) and has an internal frame like the 150M, with a one-piece ventilated cover that wraps around the top and...[more]

The concept of a large monoblock amplifier is to provide control to a speaker.  The difficult part of the job is maintaining finesse and musicality while doing it.  Audio Research has produced some of the most critically acclaimed products during its 42-year history and the new Reference 250 SE aims to break new ground. From the moment the music begins, the foundation of an ex...[more]

The REF300 monoblocks have created as much of a stir among audiophiles and music lovers as the larger REF600s did when first introduced in late 1995. Well, we're happy to announce that REF300 owners now have good reason to be excited all over again with the introduction of the new and improved REF300MKII First, the sonic improvements embodied in the MKII version are nothing short of monumental...[more]

Following upon the technical changes that have been so successfully received in the MKII version of the REF300 monoblocks, similar changes have now been made to the design of the REF600 model. The resulting improvement in sonic performance is, if anything, even more dramatic in the 600-watt flagship model. As in the REF300, the REF600MKIII has been refitted with new audio and power-supply circu...[more]

When the Reference 600 Power Amplifier was introduced in 1995 it set a new standard for High Definition® in music reproduction. In every meaningful category, the Reference 600 - 300 amplifier series remained at the pinnacle of audiophile performance. Now the REF600-300 legacy continues with a new flagship from Audio Research: the Reference 610T monoblock.     Like its pr...[more]

The Reference 750 SE monoblock amplifier continues the story begun 20 years ago with the introduction of the Reference 600; that is, to create the ultimate, tube-driven amplifier with enough power to drive any speaker load and to provide a musical experience unlike any before it. The Reference 750 SE redefines all expectations of what is possible from an amplifier in a music playback system....[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]