Newbie TA-15 Tube question

gibby58 said:

I bought a demo TA-15 from Sweetwater. I'm loving the amp, but I had a Preamp tube go microphonic on me. I ordered a set of Tung-Sol's. I've read good things about them. I bought 4, but in the TA manual it says not to replace all the tubes at once. I've never heard of this before. Is that right?
Thank you in advance

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J.J said:

The Tung sol is a great tube and has been my favorite new tube for a few years now. It almost always has taken my amps to where I want them tone wise.

One thing though, more than one or two may be hard on your ears as they will tend to shift your tone to the bright side.

What I would do is find which tube is bad by substituting one of your new tubes into each slot. Then change your tubes around so that you have a Tungsol in V1 or whatever the first gain stage is and the stock tubes every where else.

Have a good play and decide if you like that and then perhaps target V2 and see if that was an improvement or not.

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