Ampeg B-15 Portaflex

New electrolytic caps, 3-prong cord, replaced a broken potentiometer - pretty standard tune-up on any amp from the 60's.  Also had some noisy resistors that I replaced after taking the photos.

The preamp tubes were all on their last leg but the amp had a nice Sylvania labeled Mullard GZ34 and some Realistic branded 6L6GCs, marked "Made in West Germany."  Of course Europe never made any 6L6 tubes - they are in fact USSR manufactured 6∏3C-E tubes, which are roughly equivalent to 6L6GC and the basis for the newer Sovtek 5881 tubes.  Interesting stuff.

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