passive preamp (autoformer)

[Ed Sawyer]

Tribute Passive preamp

Agreed that Pieter is the man when it comes to amorphous-cored transformers. There are none better that I know of.

I built a passive preamp based around one of his autoformers. You can see pics at http://www.edsawyer.com/tributepassive/

I have his iron in a bunch of other gear too (amps, preamps, etc.), it's as good as it gets. The wait is long, but worth it.

-Ed

 

[serengetiplains]

Beautiful work, Ed!

 

[ReinoutdV]

great (wood)work

Hi Ed,

beautifully done !

And as it's obvious you like wood.....Tribute even made on special order that very attenuator switch with wooden casing.
It's done for a Dutch audio-hobbyist who really is "wood-addicted". His site, www.dhtrob.com, is in Dutch but here you can see capacitors / resistors / amplifier casing / cd casing / etc made out of wood.

Again: great work.

Reinout

 

[serengetiplains]

Reinout, that's a fine website you mention. The fellow has done much fine work. His use of wood reminds me of Serge's work at Audio Consulting.

 

[sjh327]

very good! I like

 

[hesener]

silver wire transformers

Reinout,

do you know the transformers from Amplimo? They have silver wire versions of some of their (toroidal) output transformers..... I was contemplating, but they are VERY expensive and I wonder whether anybody tried.....

www.amplimo.nl

alfred
PS: beautiful preamp you have there!

 

[maxlorenz]

Hi ReinoutdV,
Congratulations for your nice attenuator.

I own a TVC but I'm interested in an autoformer too. This one seems excellent and not so expensive. I think I'll "transform" my transformer into an autoformer

I have some questions:
Anyone tried a TVC wired as autoformer? Analog_sa??
Should I use only the secondary or solder also the primary winding?

Hi Ed Sawyer,
How do you rate the Slagle attenuator, compared to the Tribute?

Thanks in advance for your replies

M