HockessinKid
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I've been rolling some different tubes in my 25th Anniversary modified CSP3 preamplifier for the last month. Settled on ta Raytheon JAN 5R4 WGB "potatoes masher" rectifier. A nice matched pair of Reflektor 6N5P tubes in the output positions, been there for a long time, such clarity. Next up the all important input tube in the front.
After several folks recommended the 6SN7 tubes, particularly the long lived VT-231 varieties, I got an adapter and began listening. The grey glass RCA's 1940-50's are very dimensional and sounded excellent, but lack a bit of treble extension. A lot of the clear glass versions - RCA, Raytheon, GE, and other sounded ok but lacked dimensionality in my system.
While I haven't tried the ultra pricey Tung-Sol black glass with copper rods 1940's, I did get a chance to try a NOS Russian Melz Metal Base variant 6N8S = 1578 = 6SN7 = ECC32 hole plate this past week. Holy Crap does this tube sound exceptional! Outstanding note attack and decay, tonality, and midrange just to die for. I'm in listener heaven.
I'll be comparing it with a Sylvania VT-231 JAN-CHS-6SN7GT 2-Hole "BAD BOY" tube later this week, but so far the Melz tube is champ and I sourced a couple more NOS tubes for back ups.
Needless to say the 6SN7 tubes with the 6922-6SN7 adapters have added another dimension to the versatile CSP3 and some more dents in my wallet.
Cheers,
HK
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