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redrabbit 6th May 2007 10:55 PM

Valkyrie.... line-stage preamp..... info??
Anyone have links for this preamp?
I have built Jung's AD744/AD811 circuit found on his pages, but I wonder how this Valkyrie differs ?
The only info I've found is to order backissues from AudioXpress.
It was a project published there.


Valkyrie. A line-stage preamplifier. Utilizes high-performance op amps in the signal path. Provides a modest voltage gain of about 5 (14dB), but can be increased.
AUDIO AMATEUR 1/1994 [Mar 1994] (v.25#1) pg. 10
Correction AUDIO AMATEUR 3/1994 [Sep 1994] (v.25#3) pg. 42
Added Info AUDIO AMATEUR 3/1994 [Sep 1994] (v.25#3) pg. 45
Correction AUDIO AMATEUR 2/1995 [Jun 1995] (v.26#2) pg. 45
Added Info AUDIO ELECTRONICS 3/1999 [Jun 1999] (v.30#3) pg.39

Gordy 28th June 2007 11:10 AM


Mikett 28th June 2007 03:05 PM

It is the essentially the same circuit. The Valkyrie adds buffers to the tape outputs etc and is not dual mono.

Gordy 29th June 2007 12:27 PM

Many thanks.

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