I've been using the JJ tubes for a while now and they have held up for me. I use their E34L's in Music Mans with around 700v bashing around but I tend to bias them a little cool, due to MM's habit of eating tubes before they went to the SS driver. Have had little to no failures but like I say, I bias them a little on the cool side. Like maybe 22-23mA per tube. After seeing the price of real Svets, I can't get anybody to buy them. Honestly, the geese can't hear the difference anyway. Have wanted to try some of the JJ 6CA7's for the MM's since that's what they really had in them when built but haven't had the balls to order any yet. What a wuss! Use nothing but the JJ's 6L6's and they've really been good to me. I swear, reliability MUST have something to do with the bouncing they get from shipping. I remember Jon(vintage jon) LOVED ruby's but I had NOTHING but trouble with them. Go figure. Of course, he WAS a lot smarter than I am! Rest easy jon boy. Mike.
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