Slagle autoformer. What do you want from an autoformer? I can safely say you can find it at Intact Audio. Four versions are available with different attenuation ranges and step size. . Dave Slagle's goal was to offer an affordable inductive volume control that measures really well, is easy to install, and provides sufficiently fine volume steps. Jul 10, 2014 · For a couple of years, I have been using a passive preamplifier built with "Slagleformer" modules, which are Dave Slagle's excellent autoformers packaged in a remote-control friendly circuitboard by John Chapman of Bent Audio. However, Ive just received my Truth preamp back after the latest upgrades - Ed from the Hornshoppe is an extremely good guy to deal with - and Sep 22, 2013 · A visit with Dick Olsher’s DIY Slagle Autoformer Volume Control, or, The Brotherhood of the Traveling Preamp In 2011, Enjoy The Music posted an article by Dick Olsher on a DIY project, the Slagle Autoformer Volume Control (AVC for short). 25dB steps. Jul 21, 2009 · The Slagle Autoformer Modules are a joint design between John Chapman of Bent Audio and Dave Slagle of Intact Audio. Dave Slagle Autoformer Volume Controls 0 Members and 1 Guest are viewing this topic. In my system it beats out the LightSpeed Attenuator; you can clearly hear it has less impedance issues than the LCR preamp. Jun 9, 2023 · Are you seeking information because you want to build one or would you prefer to buy a pre-amp designed around a slagle autoformer? If the latter, you could look for a Vinnie Rossi LIO that has the slagle autoformer volume control. 25dB in 47 1. Nov 27, 2018 · My lovely wife bought me a pair of Dave Slagle autoformers for our anniversary last week. Lets look at a few of what is available today. (Assembling is building, right?) As I explored options, I read so many good things about David Slagle's Intact Audio Jan 28, 2017 · Dave Slagle's AVC products are available in many configurations and also custom work is available. Jul 20, 2011 · Amazing, clearly no-one has any interest in passive preamps any more. Oct 17, 2025 · Used Dave Slagle Autoformer for sale on 400+ second hand hifi sites & shops. These are clearly well made units, clearly designed Dec 30, 2024 · Hi, Up for sale (you knew) is my Slagle Autoformer Volume Control. Read 5467 times. The bottom pair are 3 position switches which are effectively governing the sensitivity level that the 12 way switches operate at so offer a Positive Feedback ISSUE 60 march/april 2012 The DIY Chronicles 2012: Wire It Up and Fire It Up! The Intact Audio Autoformer Volume Control: Incredible Value, Stunning Sound by Gary L. Beard Some time ago, I began to explore a new audio hobby—learning to "build" audio gear. The design uses autoformers to attenuate the signal, but with a custom board that eliminates the need for excessive wiring. The top of the line is a 47 position stereo attenuator that goes seamlessly from +5dB to -51. I've been wanting to try avc's for some time now, so I decided to build a box, add a selector switch and take a stab at soldering a bunch of tiny wires. Oct 16, 2025 · A brilliant Elmaformer passive preamp made by EMIA using Dave Slagle copper autoformers. Use Hifi Shark to monitor pricing and global availability. It makes much more technical sense to use an auto transformer (aka autoformer) for this application. The nature of an autoformer transforming the excess voltage into current drive makes this an ideal solution for matching driver efficiency. Thanks for the information. The top pair of knobs are 12 position switches adjusting L & R. This one - was recently built by Guy @murrayjohnson of this parish and is configured as Two inputs with parallelled Outputs. Pity because this would be the best $500 preamp I've heard. Pure amd minimalist with a natural and clean sound and excellent hand-feel from the swissmade Elma volume control. wbk hck hbc wva tta wye sib iwx tzs epk nfa awk gjx tni olz