How To Easily Locate A Rattling Tube - Ask Zac 134

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After last week's 2-hour interview with Don Kelley, I decided something shorter was in order. My old Deluxe Reverb started exhibiting a funky rattle, and I had to fix it. Usually, I play while a friend pushes on the amp's tubes one at a time with a pencil eraser. I show how to use a looper pedal to help you find the rattle.