Picked one of these up a while ago just as a curiosity. I got round to re-capping it today seeing as it days from 1970 I figured it would be best. Most caps measured 70% over what they should. Only strange thing was how they had used one capacitors terminals to bridge two sections of circuitry together. I replaced this with a small wire bridge. Fitted it with some Nichicon PW's and some Panasonics for output capacitors with fairly low leakage, checked the centre point and idle current and hooked it up. I thought it best to go to the top and just hooked it into my SPEC-3 and wow... For a little old capacitor output amp, it sounds brilliant! Has a great deep sound stage. Eagles are sounding good along with a few others. Anyone else come across one of these - I like it for the tiny dimension and now the sound.