Hi, all out there....
I can see that there is some talk around QUAD II amplifiers from
1960's.
I have 3 of those amplifiers. I have tested them and all works. But I
don't have tubes to all of them. So I have to move around the tubes to
have the amplifiers checked.
Do You think there is some value in these 3 amp's???

They have been used by the Swedish Television as control-rooms
amplifiers.
There seems to have some modifications at the input. There is a
transformer at the input, so there is a balanced input, instead of the
ordinary unbalanced input.

About the tubes (it uses KT77 for the output-stage), can I use EL34 (I
have some of those)?
I know that I have connect pin 1 and 8 to get them running.
But will it reduce the value?

OK.....I think I stop there, and see if someone reply on this.

Bo-Lennart Karlsson
SWEDEN