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  1. #1
    Do What? jrhymeammo's Avatar
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    Quote Originally Posted by basite
    Also found this:




    There is only one XLR input, so this means you can only run the amp in balanced operation when you bridge it, which makes sense, somehow, because bridging it makes it a fully balanced amplifier too, however, most amps that offer XLR do offer them for stereo use too...


    Keep them spinning,
    Bert.
    Great pic.

    Just by looking at the picture, the amp looks balanced.
    Maybe it difference underneath PS caps, but why would Onkyo put in symmetrical components then just 1 XLR input? Are they cutting corners? Then again I can't name a single manufacturer who makes truly balanced stereo amp at under $2500.

    Whatchu think?

  2. #2
    _ Luvin Da Blues's Avatar
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    Quote Originally Posted by jrhymeammo
    ............Then again I can't name a single manufacturer who makes truly balanced stereo amp at under $2500.

    Whatchu think?

    I can....

    http://www.marshsounddesign.com/a400s.html This sells for $2295 MSRP
    Back in my day, we had nine planets.

  3. #3
    Shostakovich fan Feanor's Avatar
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    Quote Originally Posted by jrhymeammo
    Great pic.

    Just by looking at the picture, the amp looks balanced.
    Maybe it difference underneath PS caps, but why would Onkyo put in symmetrical components then just 1 XLR input? Are they cutting corners? Then again I can't name a single manufacturer who makes truly balanced stereo amp at under $2500.

    Whatchu think?
    My Monarhy SM-70 Pro amps are the same: a single XLR input for fully balanced, monoblock operation
    ...


    Bear in mind that almost all solid state amps, and many tube amps too, are "push-pull" i.e. balanced in their output stages.

    As I understand it, (I wish somebody would correct me if I'm wrong), on input, single-ended signals must be split and one side inverted to feed the push-pull output stages. With true balanced input, the splitting and inversion can be bypassed. I suppose the bypassing is a bit easier to do in case the bridged operation (??).

  4. #4
    Music Junkie E-Stat's Avatar
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    Quote Originally Posted by jrhymeammo
    Then again I can't name a single manufacturer who makes truly balanced stereo amp at under $2500.
    Parasound makes one for about a grand. Halo A23.

    rw

  5. #5
    Forum Regular blackraven's Avatar
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    Quote Originally Posted by jrhymeammo
    Great pic.

    Then again I can't name a single manufacturer who makes truly balanced stereo amp at under $2500.

    Whatchu think?
    My Parasound Halo A21 is fully balanced at $2200
    Pass Labs X250 amp, BAT Vk-51se Preamp,
    Thorens TD-145 TT, Bellari phono preamp, Nagaoka MP-200 Cartridge
    Magnepan QR1.6 speakers
    Luxman DA-06 DAC
    Van Alstine Ultra Plus Hybrid Tube DAC
    Dual Martin Logan Original Dynamo Subs
    Parasound A21 amp
    Vintage Luxman T-110 tuner
    Magnepan MMG's, Grant Fidelity DAC-11, Class D CDA254 amp
    Monitor Audio S1 speakers, PSB B6 speakers
    Vintage Technic's Integrated amp
    Music Hall 25.2 CDP
    Adcom GFR 700 AVR
    Cables- Cardas, Silnote, BJC
    Velodyne CHT 8 sub

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