2a3

  1. iquadius

    Audio Innovations 2a3 dilemma

    Hi all, I have a dilemma, I own two pairs of second audio amplifiers. They are valved with KR octal 2a3's which I know are quite superb and currently in very fine fettle ... so, to future proof I have been considering having one pair converted to run the more common 4 pin variants thus allowing...