I'm looking looking to spend around £500 for a Moving Magnet Phono stage to go between Rega Planar 6 and Quad Artera pre. Cartridges are Audio Technica AT150 EA with it's original Nude Elliptical stylus and a VMN50 SH Shibata and also a Goldring 1042 GX.
The Quad Artera / Elite QSP Pre/Power is quite warm sounding already so not sure valves would work but I'm open to suggestions.