I put a set of these in an Epiphone 56 Reissue Goldtop. I love the guitar and the stock pickups sounded great... but they hummed real bad and had midrange microphonic feedback problems at gigs. So I bought these Seymour Duncan STK-P1 P90s and they not only solved the problem COMPLETELY, they sound great too!! They're not quite as warm as the stock Epiphone P90s, but it's easy to adjust your amp to make up for the difference. The STK-P1s have a nice P90 type sound to 'em. They have great mids!! Also they have a real nice pristine high end shimmer to 'em that I just LOVE!! So I can get that phat P90 sound with excellent clarity. I did have to get the guitar routed out because the STK-P1s are taller than standard P90s. So that was a pain. But now that it's all said and done, I'm extremely happy with these pickups!! Great P90 sound with no noise or feedback problems! EXCELLENT!!

I love these pickups but the one thing the description doesn't tell you is that P-90 Stacks are taller than traditional P-90s. While that won't make a difference in most cases, I had to have my guitar guru rout out a little bit of wood to install them in my SG. No biggy, just thought you should know. They sound GREAT!

I have stacked P-90 in my Washburn Pro66G I love the tone and can get the chunch. Really thickens up my sound.

rips like a p-90, quiet like a humbucker.

Sounds good in a Gibson es-135 running through a fender bassman head.