Long answer coming your way. So I've got a brand new Polytope V2 and a V1 right now - long story, but I wanted to try both and am just deciding if I want/need the V2 features before I flip one. Needless to say, having two of them gives me the benefit of comparing and knowing that it's not an issue with the Polytope itself. They both behave the same with the Broughton Super Stack.
I think the issue is that I was riding the HPF on the Polytope(s) a little too low, and when I dig in on E & A I'm causing the pedal to distort a wee bit. I thought my filter setting was reasonable based on what I remembered from the first time I had this pedal, but I'm clearly wrong. I was setting it around 9:00, and I play with EMG-JVXs in my jazz. I know @Proton Lenny was using a 9-10:00 setting in his video with success, but he seems to have a very light, controlled touch and was playing a lot of higher chordal stuff. In comparison, I started looking at pictures of people's board on TB who have polytopes, and most have the HPF set closer to noon (or higher). This makes a significant difference - I'm not getting any distortion unless I play unreasonably hard with my right hand, and again this is primarily on lower notes on the E&A strings.
As far as the combo with the Super Stack goes, I like a lot of sizzle with my tube dirt. It seems like the treble knob/boost on the Super Stack just happens to be accentuating the frequency of the distortion that I was getting by setting the Polytope filter too low and digging in a bit too much. This makes sense with me hearing the same sort of 'accentuated' distortion when i sent the Polytope through my Broughton SVPre, because I also set that like I would for tube gain...with a pretty significant treble boost.
TLDR: I needed to set the filter higher on the Polytope and play a bit lighter. Plus, the Broughton preamps were emphasizing the distortion I was hearing because of the boosted harmonics/treble.
Glad you got it sorted. A simple fix is always good. Relieved that it isn't a compatibility issue between IE and Broughton. Both excellent companies with quality gear..


