Is your Peavey Classic humming, crackling, noisy and misbehaving? Did you leave it in a closet for a year, and now it just isn't the same as it used to be? The caps they originally used were not the highest quality so could be noisy to begin with, fail over time, and have a limited expected lifespan of only 10 years. If the amp is left to sit for long periods, that can actually be harder on those caps and decrease their life.
These amps are not hard to open up and access, so it's not a terrible job to accomplish.
Note that the instructions for this kit is for the Peavey Classic 30 that was built for a couple of decades, not for the newest Classic 30 II that has the entire circuit on one board being built today. If you're not sure how to identify it, message me, and I'll give you instructions.
You'll get a complete set of the large electrolytic capacitors of the highest quality available. 3 22uf, 2 47 uf, and 2 2200 caps. The 5 filter caps are F&T German caps. I have compared these side by side with everything out there, and these are by far the tightest spec, lowest ESR, lowest leakage caps available for guitar amps. I have never had one fail, never had one produce the tiniest bit of hum. The 2200uf caps are high quality name-brand caps, the best I could find in this value (they're pretty uncommon, so not all the manufacturers produce them).
You get a pair of film caps to cure a safety issue in these amps.
You'll also get a set of instructions to help you complete the replacement job. Before starting a guitar amp business, I was a professional communicator, I've written some books, and created a variety of manuals and teaching materials, so the instructions will be clear and to the point. I sell much more complicated kits than this one, and everyone has enjoyed the instructions and found them easy to follow.