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Best Tubes on Market today?

I'd like to upgrade tubes on my Mastersound Compact 845 SET.
I'm getting a loud buzzing noise from both channels at  listening position which I find extremely annoying.
 My current tubes are Shuguang 845C (cheap Chinese electron). Pre amp tubes are Tungsram ECC82 and driver tubes 6SN7 EH. Probably all cheap stock tubes. I Love the the sweet sound but noise level is unacceptable.  Also very audible transformer noise, but I doubt there is a fix for that. Are there other ways to minimize tube/transformer noise?

What are the most reliable aforementioned tubes out there and what is the best place to get them?
Upscale audio seems to have quite a selection. PSVANE was also recommended by some. 
 I would prefer not to spend more than $600 on 845 tubes and hoping for reliable clean sounding tubes all around.    
I also have C2600 preamp with stock tubes. Any advice on those? 
ei001h

Showing 3 responses by facten

facten
2,961 posts
 
Recommend Brent Jessee for vintage tubes http://www.audiotubes.com/
Aside from Sylvania 6SN7s, I have found the Sophia Electric 6SN7s to be very nice sounding and reliable.

facten
2,961 posts
 
I have no clue if this might be your issue or not, but I found that I was getting hum in my headphone system that was being caused by the outlet itself, switched it out to an industrial grade one and the problem ceased. YMMV
facten
2,961 posts
 
" I've been running 845 amps in my system for nearly 20 years, some noise is inherent to these amps "
I have a Line Magnetic 518iA 845 tube integrated, it makes zero noise
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