The reason why it looks rf is prob because ive been taking notes from high speed rule book and applying it to my design. And if listening is any indicator the results speak for itself. The preamp is cleaner and quieter than most high end designs its come across.

and with your buffer in place i doubt anything will be able to dethrone it for a while
Anyways, I thought the rule of thumb was to keep the damper resistor greater than 20times the coil resistance at which point even 22ohm is sufficient?
I will raise it even higher and report back.
As for the RF situation the inductor could be spraying radiation at that frequency which might have an unknown effect to the final sound. It seems more likely with an aircore and with the way i positioned it in my circuit. And if thats true the low ohm damper i added simply 'turns off' the inductor and its hf anomaly.
I plan on trying shielded inductor for this reason
Also, i proposed an idea earlier of a high current version of this circuit with bd139 140 at high v high bias. Im wondering if you think that idea is feasible. Thanks and regards