KT66 Class A CFB amplifier


KT66 Class A CFB amplifier:
KT66 Class A CFB amplifier

KT66 (or 6550) cathode feedback design.
2x12W class A (KT66) or 2x18W class AB (6550).
4dB CFB, 7-8dB gNFB.
Choke loaded LTP driver stage.

Schematic
KT66 Class A CFB amplifier

10 kHz square wave response:
KT66 Class A CFB amplifier



  • Transformers by Sowter UK
  • Plate chokes by Lundahl SE
  • Tubes and other stuff from Demostenes NO, ELFA NO, Partsconnexion CA
  • Overall design by: Jan Erling Veiset.
    (c) Jan Erling Veiset, 07-NOV-2008 - E-mail: valhalla[at]mikke-mus.com
    Akersora 2
    N-6600 Sunndalsora
    Norway