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ecc83

  1. R

    Looking for Fosgate Signature Phono Stage Schematic.

    Hello everyone! Has anyone here worked with the discontinued Fosgate Signature Phono Stage? I'm currently searching for the complete schematic diagram of this tube-based phono preamp, either available for download or purchase. I'm deeply interested in studying, restoring, or even possibly...
    • RJA_LEBANON
    • Thread
    • 12at7 12ax7 ecc81 ecc83 fosgate jw fosgate musical surroundings phono preamp phono stage riaa
    • Replies: 1
    • Forum: Tube Audio
  2. Hifisaac

    Mystery Japanese vintage P2P tube preamp with Luxman transformer, Noriyuki Kawano Sound inc.

    Just picked up this preamp and I've exhausted my Internet skills trying to learn anything about the manufacturer. Here's what I have learned: Noriyuki Kawano the person is a nuclear disaster researcher. The patent numbers on the preamp are for the stenciled lettering, not the preamp itself...
    • Hifisaac
    • Thread
    • ecc82 ecc83 infomation request japanese tube amplifier japanese vintage luxman mysterious
    • Replies: 20
    • Forum: Tube Audio
  3. Synergy

    EL34/6CA7s + 6GH8A + ECC83/12AX7s ... Superb !

    Sweetest sounding amp with EL34 / 6CA7s + 6GH8A + ECC83 / 12AX7s and all selfmade transformers. Added a stereo bluetooth though, but its switchable. Demo video
    • Synergy
    • Thread
    • 12ax7 6ca7 6gh8a amplifier ecc83 el34 vacuumtube
    • Replies: 15
    • Forum: Tube Audio
  4. E

    Identifying Telefunken tubes

    Hi all! I've almost always bought known, identified, tested tubes from reputable buyers, and avoided the lure of the "huge box of mystery tubes". But yesterday, I came across a giant collection of tubes which seemed NOT to come from a TV repairman, or Soviet MIG engineer, but a guy who...
    • Eric Brandon
    • Thread
    • ecc81 ecc82 ecc83 identification mystery telefunken
    • Replies: 20
    • Forum: Tube Audio
  5. R

    Testing on Hickok 800 - 12AX7 vs ECC83 BIAS setting

    I couldn't find any discussion of this, so I'd appreciate your take: Hickok 800 roll chart says 12AX7 wants a BIAS setting of 12, but the Hickok 800/800A euro tubes supplement says ECC83 wants BIAS at 7. No other settings differ. Should be no difference beyond the name, right? As a 12AX7...
    • ring
    • Thread
    • 12ax7 ecc83 hickok
    • Replies: 16
    • Forum: Tube Audio
  6. PE9ZZ

    A Very High-End Crow Bar

    I don't get it. I got this very unusual, very spartan high end hybrid tube amp in with the complaint: blows its fuses. The patient is a Croft Acoustics Phono Integrated amplifier. It got some rave reviews across the internet and of course it is reassuringly expensive. My amp was bought second...
    • PE9ZZ
    • Thread
    • 2sj162 2sk1058 croft acoustics crow bar ecc83 mosfet phono integrated triac
    • Replies: 11
    • Forum: Tube Audio
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