Quote:
Originally Posted by ts31966
It is the V1 tube. Depending on the tube in V1 channel 1 and 2 can sound great but channel 3 will have less gain. The tone of channel 3 is still great but it is like channels 2 and 3 have changed places.
The black plate raytheon tube all do it. I have some black plate sylvania
12ad7's with square getters but they work fine in V1.
Like I said it also happened with a jj 12ax7s with gold pins that I got from Bob at eurotubes. This tube was hand selected for noise, microphonics, and high gain. The test results for each triode is on the box. But when I put it in channel 3 sounds wimpy also.
I really need to get a tube tester so I can quite using my amp as the tube tester.
On a side note I tried a tungsol reissue I got from upscale audio. It sounds pretty good. It is quiet, a little more fizzy than NOS but I would say it one of the best new tubes. The JJ's that came in my amp are very good also. Probably as good as the tungsol reissue. I don't know why those would be better than the one I bought at eurotubes but they are.
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Does the EVH use four 12AX7's for Channels 1 and 2 and another set of four 12AX7's for Channel 3? Is that how it is set up? Are you saying your stock OE tubes do not created this problem, only the NOS tubes?
I haven't a clue as to why you are having difficulties getting Channel 3 to respond to known, good tubes. Maybe the problem goes beyond the tubes, that is unless you have certain tubes that will work and all channels respond as they should.
Unless you know what condition the NOS tubes are in, you are just wasting your time. You could have a tube that is 56/78 and another that is 88/94. Which tube would you want in your amp?
It's good to hear info on current production tubes. In fact, I wish others would join and give their opinions on the current production tubes they are using. I sent Josh a gold pin JJ and he didn't like it very much. On the other hand, I am using four EH 12AX7's in an all tube HiFi amp and they sound really good. I've used Sovtek WA's and WB's and didn't like them. However, I ordered some of the LPS's and they aren't bad. I sort of look at Sovtek as the bottom and then everything else is straight up from there.
I'd really like someone to be able to A/B Tung-Sol and Mullard reissue tubes. I've toyed with the idea of getting four each and just trying them in an amp and seeing how it sounds with either the T-S's or the Mullards. I might do that, unless another member can supply feedback.
Marty