Hello Vassillios

Your pro ject is a phono stage. I assume it has load settings so you can tune it for your cartridge. If you have a stylus gauge, you can adjust the tracking force of your table. Proper tracking force and load settings will make a big difference.

What kind of cartridge are you using?

Your system should sound very good. There is a big difference in audio quality between a well recorded record and a poorly recorded record. I don't know your music taste, but one of the best recorded records (in either 33 or 45) is Dream with Dean (Martin). It is wonderful! Another beautifully recorded classic is Getz/Gilberto.

Mullard makes a great 12ax7 ( I assume that's the required tube).

Enjoy the music. Don't let those who know it all rain on your enjoyment of tube/vinyl beautiful music.

Enjoy the Music. Trust your ears. Laugh at Folks Who Claim to Know it All.