How can you tell when you need to replace tubes?


Can I tell by listening if I need to replace power tubes on my amp?

Should I have the tubes tested regularly?
As a matter of fact should I test all my amp's tubes? I currently own an AES Super Amp MkII with EL34 output tubes and 6SN7 front end tubes.

I have a basic meter. Can I use this to test the tubes, and what values am I looking for?
128x128mjcmt

Showing 1 response by mlsstl

A couple of years back I picked up a Superior TV11 tube tester on eBay for $40 or $50. Not the fanciest tester in the world (it is just an emission tester) but it works for my purpose.

If you decide to buy a tube tester I would recommend you educate yourself about the different types and watch the auctions so you can bid intelligently.