OP
your vinyl situation sounds a lot like mine. I have a Technics Direct Drive and about 20 LPs. I much prefer digital. My cartridge is a Ortofon
2L Blue moving magnet. My phono preamp is a Cambridge Audio moving magnet only. It cost around $400 4 years ago. It was a definite upgrade from a Pro-Ject phono pre that had a USB connection to digitalized vinyl, and it seems to do the job quite well. No doubt a $25K boutique tubed preamp would provide a more rarified experience but the CA is quite satisfying for those rare times that I spin an LP.
Make sure that your Grado cartridge is a moving magnet if you are interested. For another few hundred CA makes a preamp for both mm and mc .

