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Hi-end definitive vacuum tube phono pre

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A

Allen Wright

R.I.P.
Joined 2001
vacuumstate.com
Alex,
I believe you are making far too much of this.

Andrea published his "hi End definitive phono preamp and you critiqued it for
1/ using transformers and
2/ costing too much

The price is completely irrelevant if you are shooting for the very best. Some people mill their chassis from solid blocks of metal!

But I agree 100% with you complaint about using transformers, 100%.

But then you publish your "Reference Preamp" circuit which I find is 25 years out of date, in MY OPINION.

Now if you want to critue my circuits, you can find them at:

http://www.vacuumstate.com/index.tpl?rubrik=8&lang=2&a=%3A%B1%B6s%8D%7DYh&b=733865.5545984821

The FVP5A is my best shot at a cost effective unbalanced preamp, but the RTP3D is what I class as a definitive reference preamp.

Regards, Allen (Vacuum State0
 
B

Bandersnatch

Member
Joined 2003
A

Allen Wright

R.I.P.
Joined 2001
vacuumstate.com
The RTP3C and D are identical as far as the schematic goes, except that in the D we are using the MAT02/SSM2210 input device in the phono, not the jfets as shown.

Apart from a much better power supply where we use a choke input filter for the heater supplies and no electro caps, the other changes were component, silver wire and non magnetic resistors in the main.

Regards, Allen (Vacuum State)
 
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