BHK Pre - some pre-buy questions

[brett66]

BHK Preamp tube rolling

Johnny said @BHK what is the max heater current that the BHK Pre can supply? I have found a wonderful sounding pair of Russian 6n6p (6h6n) tubes that are essentially 12bh7’s,… plot wise they work as the bias point falls around -2v (@5ma),… Heater current is ~700ma (per tube) though,… pretty much double a 12au7,… I don’t want to over tax/stress the heater supply if it’s not up to it… One other question,… when using a cc source/drain on a tube, doesn’t that flatten out the load l…