Cagliostro,
A DeHavilland UltraVerve, a tube preamp based on octal tubes (6SN7 and others) fits the bill for fast, noiseless, and I could think of a few other adjectives such as musical, natural, etc. Not sure how it will act with your Gamut or other SS amps, but that's something I'm going to try for myself very soon with a Plinius, Ayre, or something sililiar.
A DeHavilland UltraVerve, a tube preamp based on octal tubes (6SN7 and others) fits the bill for fast, noiseless, and I could think of a few other adjectives such as musical, natural, etc. Not sure how it will act with your Gamut or other SS amps, but that's something I'm going to try for myself very soon with a Plinius, Ayre, or something sililiar.