#1
I have a jet city JCA22h and I plan to replace the tubes. I know that I can plug and play, but my question is. Do I need to buy / replace all the tubes at once? Or can I buy 3 12ax7s for now and get two more down the road as well as the two power tubes. Thanks.
#2
You can change the preamp tubes without matching all you want. 12AX7s are preamp tubes if you don't know. The power tubes must be a matched set and changed at the same time. The EL84s would be the power tubes.
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#3
You can replace the pre-amp tubes by themselves. When you're buying power amp tubes, get a matched pair and replace them at the same time.

Grab some JJ's. You should have spares of everything anyway.
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#4
Yeah I figured the power tubes would have to match. I'm glad to hear that I can mix the preamp tubes though since there's 5 of them. Pricey to replace.
#5
JJ's are only $10 each.
http://tubedepot.com/jj-ecc83.html

I recommend one of these for V1. They're low noise have a bit more sparkle in the top end.
http://tubedepot.com/jj-ecc803s.html
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