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You wrote: > >Do yourself a favor, and forget new tubes. Most modern Chinese and >Russian tubes are *junk*. I just replaced a blown vintage Mullard >EL34 in my stereo with a Groove Tubes EL34. The difference in >manufacturing quality and sonics shocked me. The GT (a Chinese EL34) >glows cherry red at the limits of its capabilities in this amp, while >the 35 year old Mullards show no color at all, except for a tiny bit >of gas in one. > >So, retube with good quality NOS (new old stock) vintage tubes. Try >Steve at Angela Instruments (www.angela.com), an excellent >straightforward guy. His web site has prices and descriptions for a >wide variety of NOS tubes. The new Svetlana EL-34s are excellent. Much better then the old Sovtek's or anything Chinese, and I like them better then the East German tubes I've jused. In fact, they are in the same sonic ballpark as my old Mullards. Longevity remains a question since I've only been using them a couple of months, but so far so good. Best, Kevin