Audio Products

The Reference 80S stereo amplifier continues Audio Research’s latest design effort in creating a vacuum-tube amplifier that not only redefines ultimate music reproduction, but does it in an incredibly beautiful package.  Outwardly, the 80S shares the same dimensions as the 160M. A single shallow whisper fan is built into the bottom plate. Flexibility is built-in, too, with XLR an...[more]

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The Argo employs the best of Constellation Audio’s revolutionary audio technology. It starts with the Line Stage Gain Module circuitry used in the Altair II and Virgo II preamps, which uses hand-selected field-effect transistors (FETs) and servo circuits to achieve an essentially perfect balance between the positive and negative halves of the audio signal.The amplifier section features th...[more]

Building on the successful introduction of the Centaur II stereo and mono amplifiers last year, and benefitting from the research and development used to create the Reference Series Hercules II amplifiers, this new amplifier satisfies the demand for a more powerful Performance Series amplifier. Products of the Constellation Audio “dream team,” the Centaur II 500 Stereo delivers outs...[more]

Building on the successful introduction of the Centaur II stereo and mono amplifiers last year, and benefitting from the research and development used to create the Reference Series Hercules II amplifiers, this new amplifier satisfies the demand for a more powerful Performance Series amplifier. Products of the Constellation Audio “dream team,” the Centaur II 500 Stereo delivers outs...[more]

The Classic 2 is the most cost-effective way to experience the incomparable sound quality of Dan D'Agostino Master Audio Systems. Its core technologies are heavily based on the design of D'Agostino's acclaimed Momentum amplifiers. The sound combines the immense power and current needed to drive even the most exotic speakers with a subtle, sweet musicality normally associated with much smaller a...[more]

Classic 3 The Classic 3 brings the acclaimed sound of Dan D'Agostino Master Audio Systems amplifiers to home theaters and advanced 2.1-channel stereo systems. Borrowing heavily from the amplification circuits D'Agostino developed for the Momentum amplifiers, the three-channel Classic 3 is a perfect companion to the Classic 2 when outfitting a 5 or 7 channel configuration of main speakers i...[more]

The CSA100 integrated amplifier is a part of the latest work by Copland, aiming to combine the advantages of tubes and transistor amplification using the synectic design concept that previously has made Copland hybrid amplifiers widely acclaimed. CSA100_front1 One tube is responsible for the CSA100 line amplification and the efficiency of this single tube layout is astonishing. The doub...[more]