I use a homebrew battery ploperstrd tube phono preamp. Undetectable noise floor; twin mono design so no cross talk; and a stepped 4 deck pot with 1% metal film resistors from Vishay I got from Alan online dealer. Sounds awesome.
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It’s a Nelson Pass design using 12AE6 6.3 volt old fashioned car radio tubes. I side a nine volt lithium battery for a power supply; gives a bit more gain and don’t seem to shorten tube life much, if any. Mine are nine years old and dhow no sings of weakening, at least so far. Really sweet sounding component! |
https//hackaday.com/wp-content/uploads/2014/06/portabe_tube_preamp_schematic.jpg Here’s a similar one to what I built: |
Dear @fleschler : That SUT has 3 diferent controls at the front plate and I don't know but I can't imagine how the designer let the signal totally out of those 3 controls each time you make changes down there. Anyway, I prefer the straigth one as the AU-1000 and is not so expensive when you find out. R. |
I have always like the idea of this unit. https://www.ebay.com/itm/ORTOFON-T30-step-up-transformer-MC-SUT-best-sound-quality-MINT-CONDITION/33... But I use one of these right now which I am very impressed with. https://www.vinylengine.com/library/denon/au-320.shtml |
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