A German couple brought this little amp into the shop for repair. At first I looked at it sideways. Not having seen one before, I started to pluck its feathers away to see what was wrong. Bad joints and the odd resistor high value. But, the capacitors seemed all good. A nice clean up and test the ECL86 output, phase splitters etc, all good. Powered up into a pair of old Warfdales, I was quite warmed to hear the nice sound. The output transformers are much more grown up than the equiv. Armstrongs!!!!