Drove up to Endicott NY and met Bill and picked up the Purity One Custom pre-production unit this past Monday;
http://www.audionervosa.com/index.php?topic=2644.0I think I now have my basic system altogether, now to begin tube rolling. There is one more issue though, and that is proper speaker placement. I think I'll start a separate thread and include the layout of my home so people can make comments as to what people think well improve my soundstage by speaker placement, but in a nutshell, my house is a McMansion, with all the negative implication of that statement. As a result, my speakers are in a family room that's wide open to both kitchen and kitchen eating area so it's one big rectangle with the speakers firing across the short end from the end of one long wall towards my seating position at the end of the opposite longwall. But back to the preamp.
Bill supplied the Purity One with Sylvainia tubes, as he doesn't care for the sound of the Chinese tubes available today. Right off the bat I noticed two things, the overall sound improved markedly from the sound of my passive preamp, but the resulting sound didn't match the sound of my recent tube preamp shootout. The top end was a little bit thin with the Sylvania tubes. So I pulled them promptly and replaced them with a pair of Raytheon Hammond tubes that Shadowlight had lent me. Now we were getting somewhere.
There was immediate, overall minor improvement in the quality of the sound. The one negative so far was on Joni Mitchell's Hejira album, on some notes especially ones she sustained in the end of a sentence, the tone just wasn't quite right, almost as if she had her mouth partially over the microphone. I think if she'd been a male singer this would be the quality people speak of when they talk about a singer coming across as chesty. Outside of that, there's really nothing negative I can say about the overall sound or presentation.
More to come as I roll in different tubes.