BHK preamp tubes

[adifferentpaul]

Yes, there is a search button, and I found the link below.
I have not changed tubes on my BHK pre, but I have changed to new Mullard tubes on my M1200’s.

BHK Preamp tube rolling

After a bit of a search, I haven’t found much about tube rolling experience with the Preamp. It would be interesting to hear what changes have been noticed switching out of the stock tubes to, say, the Tungsram.