Mark VII's Tubes - Not Too Shabby!

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Roadie
TGF Recording Artist
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When I ordered the Mark VII I figured that the first order of business would be to install NOS tubes. It's what circumstances usually compel me to do.

However, I'm liking how the amp sounds with the stock tubes, and at least for now, I'm going to wait to decide whether the expense of NOS will be necessary. There's excellent clarity and surprisingly good tonal balance that I'm hearing from this amp, without the 'zing' and ring of what Mesa used to install in the amps I got previously. They're a little brighter than my usual NOS, but not unacceptably so.

I'm confident the tubes they're currently installing are JJs.

They have high build quality. The parts and wiring appear to be properly installed and upright; there are vintage style fingers on the Mica spacers to reduce tube rattle; the same upper-bottle inner shaping on the preamp tubes, and high quality in the output tubes. Comparing them side by side with JJs, they appear the same.

Seems Mesa made a good choice here. I can put the money for NOS into other things I need. I've felt that JJs were the closest to NOS I've found so far, and that conclusion's holding up pretty well.
 
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Nope. PS Vane, unless you got a weird one. The only amps using JJ’s are Cali Tweed 6V6’s, as far as I know.
Maybe I have a weird one! The output tubes are 100% the JJs.

I think the preamp tubes are, too. But I can check one more time. I've been known to be wrong occasionally - last time was in the Pleistocene.! :rofl

However the important point is that whatever these tubes are, they sound very good in the amp.
 
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