My amplifier is the Yamaha A-S3000 integrated. I'm not going to add a separate preamp. I don't need additional power so that rules out a power amp. My mono TT uses a high output MC mono cartridge. My stereo TT uses a MM cart. If I ever upgrade to a LOMC and a problem develops, I still have the internal discrete phono stage of the Yamaha. However, adding a separate phono preamp solves another problem. There is only one set of phono inputs on the back of the amp so I have to disconnect and reconnect the other TT every time I go from playing a mono record to a stereo record.
How does it all related to the OP question ?
Tube phono stage with tube amp will generate more noise than solid state type. I also have Yamamoto, but A-08s.
In your situation the Gold Note PH-10 is a phono stage with 2 independent MM/MC input, you can connect two turntables and each one can be MM or MC. Yamaha is junk @vuch