[Guest]

Hmm-- that's odd... according to the tube diagram on the back of the unit, the amp does have two separate 6CZ5 tubes for audio output. I figured that was one per channel. But if there's no indication off a stereo output on the schematic, then I suppose there **must** be a Y-adapter underneath that is indeed combining the channels.

And if there's a connection point for an external 2nd speaker, I have to say that it's well-hidden... I don't see one anywhere. That, coupled with the lack of a balance control (as you pointed out) leads me to believe that the output was only meant to be mono-- -- what a strange product design!

And for anyone who's taking notes, the tube complement (and function) is:

Amplifier:
1 - 6EB5 (RECT FOR POLARIZING VOLTAGE)
1 - 6CG7 (1st AUDIO & TONE CONTROL)
1 - 12AX7 (2nd AUDIO & PHASE INVERTER)
2 - 6CZ5 (AUDIO OUT)
1 - 5U4GB (RECTIFIER)

Tuner:
1 - 6BJ7 (DISC AM DET)
3 - 6BA6 (AM RF, FM IF, AM-FM IF)
1 - 6BE6 (AM CONV)
1 - 6BZ6 (FM RF)
1 - 6AB4 (FM CONV)
1 - 6BY8 (LIM)

This **is** going to be interesting...

-Kevin