"Arny Krueger" wrote

With about 40 hours on a tubed microphone pre-amp I'm
now interested in increasing the timbre and micro-dynamics
resolution particularly in the 80 to 500 Hz range. My first
thoughts would be: Sovtek, RAM or Jan Philips NOS.
Any empirical suggestions?

Try rec.audio.tubes or rec.audio.pro

"rec.audio.pro".... hehehe, dweebs.

IOW, a bunch of smart guys who figured you out for the
fraud you are in almost no time at all.

Sooo... what’s your excuse, mr. Fraud?