@bdp24 : The inherent problem with Julius's circuit has been getting the two halves of the output stage to act in balance due to differing gain (one half acting as a cathode follower). And the circuit requires high feedback to have acceptable distortion (60db) - not a problem because of the low front-to-back propagation delay.
My first Tube Amplifier
I have a 40 years of audio history starting with Garrard Turntable, Fisher Intergrated(SS), ADS bookself speaker on 1978.
But I started using tube amplifier on 1999.
Since then I had been using only tube amplifier in my main system.
My last SS main amplifier was Krell KSA 150 to drive Apogee Duetta Signature speakers.
http://www.jadis-electronics.com/photos/ja500/45/3/ja500.jpg
My first tube amplifier was Jadis 500 which comprised of 4 pieces weighing 120 lb each.
B&W 801 driven by Jadis 500 gave most deep and powerful bass at my home.
But it generated too much heat so it was hard to use during summer.
It was memorable experience to use it for 4 years.
I may not go back to such monster tube amplifier again.
How about you?
What is your first tube amplifier?
I bet two cents on no one had used larger one as the first tube amplifier than mine.
But I started using tube amplifier on 1999.
Since then I had been using only tube amplifier in my main system.
My last SS main amplifier was Krell KSA 150 to drive Apogee Duetta Signature speakers.
http://www.jadis-electronics.com/photos/ja500/45/3/ja500.jpg
My first tube amplifier was Jadis 500 which comprised of 4 pieces weighing 120 lb each.
B&W 801 driven by Jadis 500 gave most deep and powerful bass at my home.
But it generated too much heat so it was hard to use during summer.
It was memorable experience to use it for 4 years.
I may not go back to such monster tube amplifier again.
How about you?
What is your first tube amplifier?
I bet two cents on no one had used larger one as the first tube amplifier than mine.
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- 118 posts total
- 118 posts total