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I just picked up a BEZ T3A-3 from a member of another forum. Should be here later next week.
The original Chinese tubes have all been replaced. Here is the tube line up as it's being delivered.
2A3 tubes are now Electro Harmonix.
6K7 tubes have been replaced with Mullard EF37A tubes. These are the ones painted red and have a top cap.
The 5Z3PAT rectifier tube has been replaced with a Westinghouse 5U4G.
From what I gather, these are hand built using point to point wiring and uses a lot of surplus military components.
Does anyone have any info on this amp and possibly a schematic? I'm not sure if anything was done to the underside of this amp. I believe that this is an early model and I'm sure changes were made along the way.
My only other SE amp in the house is a Dennis Had KT66. Sounds great with some old Mullard EL34 tubes I picked up at a yard sale.
Any help would be appreciated.
I am surprised that drlowmu hasn't responded. He seems to be a SET expert on the forum.
This forum looks pretty dead. Why does drlowmu sound familiar to me? I must know him from another forum.
Well I had time today to hook this into my system. Using a Sony CD player into a VTA SP9 tube preamp into the BEZ and playing through my HeathKit AS101's. They are basically Altec Valencias in much nicer cabinets. The HeathKits have been tweaked a bit, 902 drivers instead of the 806 drivers and a home built set of Model 19 crossovers.
Amazing how loud a few watt's can get on good speakers. Certainly is a different presentation from my Mac MC40 monoblocks. Enjoying some Dire Straits as I type.
I took a look inside, a piece of cover hardware had come loose and I needed to get it out before applying power. Nice looking transformers and all quality components including Russion PIO caps and quality resistors. All the wiring is point to point and done by someone with a high skill level. Even the tube sockets are high quality, none of that stuff where tubes can be placed in the wrong orientation like so many amps.
Overall, I'm very happy.
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