I was told by Schitt to leave their phono preamp powered up all the time for best performance.
For a moving magnet cartridge I have used a Schiit Mani and an Emotiva XPS-1. Both are quite reasonably priced and sound good to me. They also got good reviews. But my Rotel is probably brighter than a Marantz. I'd give the Emotiva the edge with my MM, a Shure V15xMR. If I were going to spend a bit more, the Vincent PHO 700 intrigues me.
For a moving magnet cartridge I have used a Schiit Mani and an Emotiva XPS-1. Both are quite reasonably priced and sound good to me. They also got good reviews. But my Rotel is probably brighter than a Marantz. I'd give the Emotiva the edge with my MM, a Shure V15xMR. If I were going to spend a bit more, the Vincent PHO 700 intrigues me.