Are Adcom GFA-535 and Onkyo TX-860 Common Ground?

teekay0007teekay0007 Posts: 2,152
edited April 2014 in Electronics
Can anyone tell me definitively whether the Adcom GFA-535 - and by extension, the GFA-2535 - is a common ground amp? I'd like to try it with some of the smaller SDAs.

Same question for the Onkyo TX-860 "Quartz Synthesized Tuner Amplifier" - 80 wpc (2 channels driven) stereo amp.
Post edited by teekay0007 on


  • gudnoyezgudnoyez Posts: 7,024
    edited April 2014
    The 535 is not sure about that 2535 two 535's sharing the same chassis. Perhaps Heiney9 will chime in I believe he sold adcoms.
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  • FTGVFTGV Posts: 3,653
    edited April 2014
    Yes the 535 and2535 are common ground.You will not be able to bridge any ch. when driving SDA's.
  • teekay0007teekay0007 Posts: 2,152
    edited April 2014
    Thanks guys, for the info on the Adcoms.

    Does anybody know anything about the Onkyo TX-860, whether it's common ground or not? I did call their tech support and was told that they were "floating ground", but I'm not sure he knew what I was talking about. The tech didn't ask me what model amp I was asking about and I know I have used my TX-805SR with SDAs without issue. I know there's several others here that have posted about using them with their SDAs also.
  • pitdogg2pitdogg2 Posts: 14,362
    edited April 2014
    I do not know of any receivers that ARE not common ground.
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