buying (NOS) tubes online

I buy from Brent Jesse as well.

Another vote for Andy Bowman. I have used him on a number of occasions over the years. He can be trusted and he will steer you in the right direction.

brent jesse.

I bought matched set, hated their sound. he had me break them in for 60 hours (just on, no signal needed), then decide.

still didn't like them. I picked a different tube, 1/2 price of original pick. he let me return, gave me a refund for the cost difference, only cost me the extra shipping. 2nd pick sound terrific.

Buy from reputable sellers vintage tube  dot net,

vintage tube services , Brant Jesse audio, viva tubes , and a few others 

Also check out Vivatubes for older production Soviet replacements.

For the 6N1P's older (1970's) Vokshod versions should be warmer sounding than later Vokshod and Reflektor versions.

Getting into 6922 types to sub for 6N1P will up the cost substantially.

Not aware of any subs for the 6N6P.

DeKay