The tubes provided has nice full sound that gives you more of a live feel and better soundstage

Right away noticed so much better soundstage, every single record sounds so much better, as if some kind of a filter has been lifted from my audio system

And it has the best, deepest soundstage I even heard

These tubes definitely improved the sound, but not sure I would recommend as they were pretty $$$.

Also, replace the rectifier tube with either a strong vintage 5u4g or a russian reissue of 5U4G. I would strongly suggest not to replace the PSVANE EL34b power tubes that it comes with