If I may offer you some good advice. For $300, you have several choices on ebay and a'gon. If it were me, my first choice would be a dyna PAS 2 or PAS 3. With this updated, I think this is easily the best sounding thing you'll find. I had a Music Reference RM5 mkII preamp several years ago and had to send it in to get moded and was given a PAS2 by the audio dealer to try. Well, when I got the Music Reference back, I actually preferred the PAS 2 over the MR. And the MR retailed for $1200. A conrad johnson cj PV2, 2A, 2AR or PV3, etc. will usually sell for over $300. Other tube preamps under this price usually don't have phono sections.
But if you want to go solid state there are several options: PS Audio IVH, 4.5, 4.6 maybe a 5.0 or 5.5, Adcom 565, B&K Pro 10, Acoustat TNP, and several others that I haven't mentioned. I believe the TNP has the best phono stage here, but the Adcom 565 and PS Audio's also have good phono stages too. Less expensive and also excellent is a Superphon Revelation Basic or Rev Basic dual mono and also has an excellent phono stage. Good luck,
Louis
But if you want to go solid state there are several options: PS Audio IVH, 4.5, 4.6 maybe a 5.0 or 5.5, Adcom 565, B&K Pro 10, Acoustat TNP, and several others that I haven't mentioned. I believe the TNP has the best phono stage here, but the Adcom 565 and PS Audio's also have good phono stages too. Less expensive and also excellent is a Superphon Revelation Basic or Rev Basic dual mono and also has an excellent phono stage. Good luck,
Louis