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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.


shkong78

Showing 2 responses by ramtubes

ramtubes's avatar
ramtubes
460 posts
 
http://www.jadis-electronics.com/photos/ja500/45/3/ja500.jpg 

Do folks know that this amplifier has a slew rate so low that it can only product a few watts above 10 Khz? The power drop off starts around a few Khz and just keeps falling. 

Now what happens when you play trumpet music with lots of energy at 10Khz on an amp like this?

The transformers are excellent, the construction is excellent but for some reason they limit the drive to the bank of output tubes by using a 12AX7 running one mA or so. 
ramtubes's avatar
ramtubes
460 posts
 
@bdp24 

Thanks, it is true that the more expensive amplifiers were pushed harder. As Brooks once said to me. Why should I sell a $5000 amplifier when i can sell a $20,000 one. You only get to sell one!

I never wanted to make expensive amplifiers, just fair priced, good sounding ones that don't break. We have 35 year old amps and preamps with original caps still sounding great. You dont need to recap our amps yet! You dont need fancy fuses that don't protect as I have written about the TuningFuses
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