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.
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