Tube DIY Asylum: Re: Looking for a GOOD 211 / VT4-C Schematic by Super_BQ Do It Yourself (DIY) paradise for tube and SET project builders.

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Posted by Super_BQ (A ) on July 19, 2003 at 02:19:59

In Reply to: Re: Looking for a GOOD 211 / VT4-C Schematic posted by Paul Barker on July 19, 2003 at 01:27:49:

Paul,

I really appreciate your help. At the moment i'm trying to order the CD archive 'Sound Practices' to educate me more on DIY hifi.

Preamp drives 2v RMS. Actually, it is Nelson Pass's SS "Balanced Line Stage" pre-amp i've built 2 years ago. My friend uses the same preamp to drive his 300B amp and we couldn't believe the improvement over a regular passive pot. But to go back, I made this preamp mainly because it was fully balanced to match my power amp (with XLR inputs). However, this particular pre-amp also serves as a converter from XLR to RCA or vice-versa. This is another area I wouldn't mine looking at - why... almost all tube circuits i've seen are not balanced? The response I get is "fewer parts in a tube amp... the better the sound". But what if the tube amp could benefit from reduced noise by CMRR in balanced circuits?

If you can spare some time for me in getting a schematic for me - I would be greatly in debt to you. I'm still not experienced enough to make from scratch, a la my-own-design.

Brendon

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