I have tried quite a few and really like the Mullard CV4003 Platinum Grade from Upscale Audio the best. I also like the new Psvane 12AU7 from Grant Fidelity.
The Mullard is a little sweeter and warmer, while the Psvane has more detail.
Op-Amp rolling makes a HUGE difference too. There are a couple of forum threads on here about that subject. Just do a search.
The Mullard is a little sweeter and warmer, while the Psvane has more detail.
Op-Amp rolling makes a HUGE difference too. There are a couple of forum threads on here about that subject. Just do a search.