Tubes for a VTL 2.5

Rootmann:
I do not have experience with 6350's, but have a lot of
experience with the 12AU7 family and its variants. Email
me offline if you wish to chat about them.

VTL used to use 6350 tubes in their preamps and then later on switched to 12AT7s. I don't know the reasoning for the switch but I would guess the 12AT7s were an improvement. I have a TL5.5 that uses 6350s and I have tried a few different 6350s with no apparent difference. I have used the VTL branded ones, Sylvanias and IBMs, they all look similar and sound the same. I would suggest concentrating on getting quality 12AU7s and try to find a good deal on whatever 6350 you can find. I don't have any experience with 12AU7s so I can't make any informed suggestions for for them.

Cheers
Jim

I retubed a VTL 2.5 with NOS Mullards and am very pleased. Upscale audio was very helpful in determining which tubes to buy for this preamp. Mullards have more midrange bloom (which I like)than the stock tubes but are very detailed at the same time (which I also like). I'm a little confused, though, since mine uses 2x12au7 and 2x12at7 tubes. Is the 6350 a substitute for the 12at7? I'm also using a ss amp and magnepans with it.