I replaced the tubes on my Mod3 two tears ago. NOS Seimens super duper low noise, super duper matched, blah, blah, blah tubes at less than $70 apiece. So much better than the supposed select Ruseky crap. I don't care how many boxes of tubes you go throught to find "low noise, matched" Soveteks. These are what they are. For no more money you can get better NOS stuff that will allow you to tune your system (to a degree) via the preamp. The Seimens did EVERYTHING better than the Sovtecs. Why to you see manufacturers using tubes like Sovteks? Simple. Available supply. A manufacturer needs to maintain CONSISTENCY in the product -- so, they need tubes that are readily available. Go with NOS all the way, man. Kevin Deal seems to know his stuff. Also, Andy Bowman at Vintage Tubes Services is great. Tubes are all that Andy does. Good luck. Jim.
Tube replacement for Audible Illusions
Hello, I have had my Aud. Ill.L-1 preamp for about 5 years now, I've replaced the tubes three times with what it came with,Sovtec premium grade 6922's[so they say] Has anybody had any luck with other tubes that might be better than these? If so, how do they compare? Thanks for any info.