Dneu2011 Posted August 16, 2023 Share Posted August 16, 2023 I built this preamp to experiment with the well regarded muses volume control used in Pass Labs preamps and integrated amps. This is the preamp design from Wayne Colbourne at PassLabs offered at Burning Amp 2018 and sold on DiyAudio. I used the LPS9 power supply from Academy Audio along with an older model VCX. The result is a very musical and clean sounding preamp and I followed the App notes recommended by them. The unit has two inputs, two outputs, a headphone out, remote for volume/mute and nice illuminated power button. I used a 1U galaxy chassis from Modushop Hifi2000. I’m asking $400 plus shipping. 1 Quote Link to comment Share on other sites More sharing options...
Dneu2011 Posted September 27, 2023 Author Share Posted September 27, 2023 Bump for a very nice preamp with muses volume control and linear PSU. Quote Link to comment Share on other sites More sharing options...
henry4841 Posted September 27, 2023 Share Posted September 27, 2023 A very nice linestage I have built and own myself though not as nice looking as this one. For those that do not know Wayne Colburn designs the linestages, sometimes inaccurately called preamps, for Passlabs. My understanding is a preamp has a phono stage. Check the prices for a linestage at Passlabs and you will be shocked at the prices his designs demand. No affiliation with seller or his ability for diy but from all appearances and choice of parts it looks well made. Excellent design with all the circuitry one desires in a linestage. Not a cheap build for a diy'er by the way. Quote Link to comment Share on other sites More sharing options...
Dneu2011 Posted September 27, 2023 Author Share Posted September 27, 2023 @henry4841 I appreciate it. I currently use this same preamp in my main system with similar muses volume control but it’s fully balanced. I built this one as experiment and I had a spare Wayne’s board. Quote Link to comment Share on other sites More sharing options...
Shakeydeal Posted September 27, 2023 Share Posted September 27, 2023 For sure the heart and soul of a good preamp is the type of attenuation used. I bet this design sounds far better than a high dollar box using a cheap ALPs pot. As for the moniker of "preamp" when used for a passive device, my take on it is this. No, it doesn't amplify anything. But it does come before the amplifier, so I think "preamplifier" is appropriate in that sense. GLWS... Quote Link to comment Share on other sites More sharing options...
Dneu2011 Posted September 27, 2023 Author Share Posted September 27, 2023 @Shakeydeal very good point Linestage vs preamp can be confusing. No phono on this one and the overall gain is less than 5x. This has been my favorite DiyAudio preamp to listen to that was designed by Nelson Pass/Wayne. Quote Link to comment Share on other sites More sharing options...
Dneu2011 Posted 23 hours ago Author Share Posted 23 hours ago This unit has SOLD. 1 Quote Link to comment Share on other sites More sharing options...
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