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Author Topic: Dave Slagle Autoformer Volume Controls  (Read 3106 times)

Offline Triode Pete

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Dave Slagle Autoformer Volume Controls
« on: January 16, 2017, 07:52:54 AM »
Dave Slagle (from Intact Audio... http://www.intactaudio.com/atten.html) was kind enough to provide my a pair of his prototype latest & greatest Autoformer volume controls (see some details here... http://hifiheroin.blogspot.com), which I had installed (by tube guru & fabricator John Wiesner) on my Loesch & Wiesner preamp (line & phono stage).

This isn't your everyday circuit board but one made with .9999 silver and the traces are cut on a CNC milling machine.

Can you say "Transparency"? WOW! Never thought replacing my high quality Japanese-made ALPS volume pots with these heavy transformer-based volume controls would make such an improvement!

Some pics...

Kudos to the Slaglemeister! Well done!

Cheers,
Pete
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Offline topround

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Re: Dave Slagle Autoformer Volume Controls
« Reply #1 on: January 16, 2017, 01:09:09 PM »
now take out those caps and replace them with his trannies and see what happens :thumb:
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Offline tmazz

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Re: Dave Slagle Autoformer Volume Controls
« Reply #2 on: January 17, 2017, 08:53:55 AM »
Just curious Pete, What is the purpose of the batteries in the middle of the chassis for as this pre uses two outboard power supplies?
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Offline Triode Pete

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Re: Dave Slagle Autoformer Volume Controls
« Reply #3 on: January 17, 2017, 02:59:37 PM »
Quote from: tmazz on January 17, 2017, 08:53:55 AM
Just curious Pete, What is the purpose of the batteries in the middle of the chassis for as this pre uses two outboard power supplies?

Battery bias, my friend!
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www.TriodeWireLabs.com
WT Reference/Lyra Titan I
Quadratic Audio MC-1
Custom BorderPatrol preamp with phono & line stage
Innuos Statement Server
BorderPatrol S20 EXD w/EXS PS
Klipschorns - Volti hot-rodded
UberBUSS
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