@kennyc funny you should mention Sansui. I'm picking up my newly restored Sansui 1000A receiver this morning! I bought it on ebay a year ago. My tech has painstakingly rebuilt the thing, replaced one of the blown transformers only to have it blow again while testing it. He replaced it a second time and said it is now ready to be picked up after he put it through its paces over the last few months.
I'd brought him a Harman Kardon 930 Twin Powered receiver previously to restore. It's been the heart of my vintage rig for the last year. When I picked up the HK from him, knowing I was a tube guy, he said "I was going to love it but the only other receiver I might like more would be the Sansui 1000A."
Naturally at that point I had to hunt for one of those! Anyway, I've loved the HK 930! Having tube mono blocks in the primary rig, I am totally blown away with the sound stage and depth of sonics from the little 930! It is truly impressive! It kills the two integrated amps I've had in the rig with the same speakers, a Yamaha A-1000 - equal power and much better sonics/soundstage and, a Scott A 436 - not enough power and much better sonics/soundstage. The speakers in the vintage rig are Infinity RS4b's. It will be interesting to compare the HK930 to the Sansui 1000A head to head in the rig: a solid state dual power transformer receiver to a vacuum tube receiver. He said the 1000A was the pinnacle of tube Sansui receivers.

