I bought a pair of Mark IIIs a little over a month ago... I knew I was in trouble when I got to the guy's house and he took me out to a shed where he kept the "old hifi stuff". I tried to negotiate a better price but this was hard to do as he got three more calls from prospective buyers while we stood out in the dark--me trying to see what I was buying with a borrowed flashlight with weak batteries. Long story short... I got the amps home--they were ugly and blew fuses. Then I discovered this forum and Bob's generous supply of schematics and pictorials. I went ahead and stripped the amps down. I washed, polished, sanded, painted, wire brushed screw heads, bypassed quad cap sections, built under-chassis cap boards, inserted diodes, retubed, replaced resistors and as of last Friday night installed the completed pair in the downstairs listening room. How do they sound? Good. Very good.
