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Single Ended Triodes (SETs), the ultimate tube lovers dream.

Sugden A21a

If you are going to consider a Solid State amplifier then this one is the only one I would buy that I have so far heard. SS fans though will point out numerous amps that do things better but usually it is a whole bunch of things except the words music reproduction.

The A21a is a bit of a cheater though since it runs Single Ended pure class A and can probably fry an egg on top. So while it has no tubes -- it is a Single Ended.

And it was my favorite sounding SS amplifier before I knew anything about SET and before I had ever heard a tube amp or ever heard of Sugden. So clearly Single Ended was doing something to me even when I was "blind" to the technology.

The A21a is an absolute winner that I could live with long term -- and it is after all the longest selling SS amplifier in history -- started selling in 1968 and the amplifier has went through 2 upgrades -- better heat resistant parts and cosmetics.

And considering some of the prices of SS amplifiers ~$2000.00 for the A21a has to be a steal.


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