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5ar4

  1. Jxmos

    Gray Research AM-50 / Dynaco Mark 2 Clone / Gray Concert Duet Console Info Questions Schematics?

    At an auction last fall, I was lucky enough to win a Gray Research amplifier and preamp. Since information on these is hard to find, I thought I share what I’ve found and see if others might have more details. As I restore them, I believe these are units from a console that Gray Research sold...
    • Jxmos
    • Thread
    • 5ar4 am-2a am-50 clone concert duet el34 gray gray research tr-5000 tr-5001
    • Replies: 23
    • Forum: Tube Audio
  2. kcline

    Tubes found in falling down house Amperex Bugle Boys

    Yesterday one of my professional antique picker friends called said they had found some tubes in this falling down house that they had bought all the contents, which also had LPs, which they wanted me to sort out for them. Found about 500 tubes almost all TV, someone had been thru these but they...
    • kcline
    • Thread
    • 5ar4 amperex bugle boy gz-34
    • Replies: 7
    • Forum: Tube Audio
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