along with a pair of Mark IV 40 watt amps.
They haven't been used in ten years. They
worked when I packed them up.
Visual inspection doesn't reveal anything obvious.
Is there anything special I should do before
powering them up for the first time?
I'd like to put them back in service driving
a set of Dahlquist DQ-10 loudspeakers.
I ran across Dynakitparts.com recently, which
would make repairs possible if need be, but
I think I'd also like to improve them if possible.
Are there aftermarket upgrade boards for these
Mark III and IV models?
Most seem to focus more on the Stereo 70.
Isn't a Mark IV simply "half" of a Stereo 70
that produces slightly more power because the
power supply is not shared with a second channel?