I had the ISP Stealth. I think it was great for running the kemper into a regular guitar cab. But When I connected it to my Kemper Kab, at very low volume it was ok. But once it reached a moderate volume, (a small not full volume rehearsal) I noticed a high frequency distortion that almost sounded like a rattle in the speaker. Kind of metallic sounding. I actually thought it was a problem with my Kab. The ISP is not class D. When pushed hard it’s designed to have some saturation to it. When this meets the Kemper Kab’s ability to reproduce high frequencies, it’s not my favorite. I moved to the Seymour Duncan Powerstage and it’s great.
Interesting, yes.
My experience is very different. But in all fairness I am using it at home.
dmatthews, Lets see what you think...