I am at work right now so I don't have the exact information handy, but I'll share my general approach for my Aesthetix Io. BTW, I got the best ideas from Albert Porter, some additional information and great tubes from Kevin at Upscale Audio, and more information about tubes Brian at Analog Shop in San Jose. I use Mazdas for the first stage in the phonos. I am running a Keotsu Onyx Platinum with around .25V output. I needed a very quiet first gain stage. The Mazdas are very quiet and very fast. In the next two phono gain stages I used Mulards (old logos -1960). I have a set a Telefunkens also which sound damn good, but I prefer that first combination. There's one more tube type in the phono stage and I'll get back to you wit that information on Monday. In the 2 Power Supplies. BTW, do this upgarde its worth it! I use Genelex KT-66 for the power tubes and Mullards for the others. The all these NOS tubes are quite expensive and I have built up a gold mine of NOS tubes in my cabinet over the years. Aside from the costs, which is a very personal decision, you can get fantastic music from the Aesthetix Io. Be prepared to enter the "zone". I should add that all this took me three years and has been a lot of fun too. Be sure and talk to Albert, Kevin, and Brian as they are the experts.
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