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Thread: Atma-Sphere MA-2 Amplifier

  1. #1
    Site Founder And Administrator Ron Resnick's Avatar
    Join Date
    Jan 2015
    Beverly Hills, CA

    Atma-Sphere MA-2 Amplifier

    I think we need to spend more time on the Atma-Sphere MA-2 Class A, 220 watt, OTL amplifier.

    From these reports and WBF members' reports there seems to be a consensus that these amplifiers, like other OTL amps, are capable of amazing transparency, but, unlike other OTL amps, you can get these in 220 watt and 500 watt versions.
    Mono and Stereo - Senior Contributing Reviewer

    turntable: American Sound AS-2000; tonearms: SME 3012R, Schröder LT
    cartridges: ZYX UNIverse Premium X-SB2, Benz-Micro LP S; tape: Studer A820 Mk II
    phono stage: Aesthetix Io Eclipse; line stage: Aesthetix Callisto Eclipse
    amplifiers: Alieno LTD 250, AM Audio 833S Ultima; speakers: Gryphon Pendragons
    cables: MasterBuilt Ultra or Cardas Clear Beyond (TBD); power: Benjamin Electric subpanel; Torus AVR60BAL; JPS in-wall wire; Furutech NCF outlets; room: 20' wide X 25' long X 15' tall; treatment: ASC Tube Traps and Tower Slims; tweaks: Herzan/Taiko Tana, Shakti Stones, Shun Mooks

  2. #2
    Addicted to Best!
    Join Date
    Jun 2011
    Melbourne, Australia
    Power consumption 800w per channel. Wow, I thought my Line Magnetic put out some heat but this is something else !

  3. #3
    I owned MA2 Mk II.3s for a number of years and I loved them. Never a glitch with a tube or any other issue for that matter...Problem is I live in Texas. In order to be comfortable I would have to turn the ac way down a few hours ahead of a listening session in the summer...In the winter the amps pretty much kept our house cozy when the amps were on...

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