Xagwell, My advice is talk to Jim White at Aesthetix. You will not find a greater gentleman in Hifi audio. There is lots of rumor and innuendo and questionable fact being aired against the Rhea and the Calypso. If you want to bring the noise down on the Rhea you must have very good tube selection by a reputable source, period. I have owned the Aesthetix Rhea and Calypso (preamp) for some time now and can attest to the fact that they are very, very picky. It is not so much the brand of tube as it is the quality of the tube. Brands with give you flavor, quality tested and hand selected tubes with give you peace and quiet and you should find that for the extra attention to tube selection you will get back an extremely detailed and dynamic result. If your not up to chasing down a good tube supplier you may as well go out and trade the Rhea for very possibly a lesser phono amp. I have put this phono amp head to head with many, foremost a world class Aesthetix I/O with a full complement of vintage Telefunken and although the I/O will better it every time in dynamics, air, and scale, it will by a very small margin when you consider the price difference, not to mention the Rhea is far more flexible than most all phono amps on the market at any price including the I/O. IMHO the Rhea is the best overall value and sound out there. Im not saying its easy or cheap, but it is the solution and it is worth it. Best regards.
Happy Listening!
Happy Listening!