Recent content by keymap

  1. keymap

    problems with Adcom GFP-1 preamp & GFA-1A power amp

    Ok problem identified - it's the power amp rca input jacks. I noticed after unplugging the jacks leading to the preamp that the input jacks were really loose. When I opened up the case to see what was going on under there, it was apparent that the jacks were hanging by a thread from the board...
  2. keymap

    problems with Adcom GFP-1 preamp & GFA-1A power amp

    Ok good advice - will do and report back. One more question - does the fact that audio plays perfectly fine through the headphone jack of the preamp tell us anything of note? Or not really since the amount of power necessary to drive a headphone jack is miniscule? Sorry for my ignorance on...
  3. keymap

    problems with Adcom GFP-1 preamp & GFA-1A power amp

    Oh and also I should mention, the GFP-1 has 2 sets of output jacks, and I tried going out through each of them and had the same issue regardless of which output was going into the power amp.
  4. keymap

    problems with Adcom GFP-1 preamp & GFA-1A power amp

    Ok thanks. I tried multiple confirmed working audio sources into multiple inputs of the preamp and had the same issue all around. So it's not the sources. Any idea what exactly this means is wrong with the preamp? Think I should just replace the preamp or is there anything you can think of...
  5. keymap

    problems with Adcom GFP-1 preamp & GFA-1A power amp

    I have a 30+ year old system with an Adcom GFP-1 preamp and GFA-1A power amp that worked great and sounded great until a recent move. I moved the components extremely carefully and reproduced the exact same connections precisely and would be very surprised if something was damaged in the move...