Low-gain overdrive pedal with sidechain HPF? (Affect the signal only above "x" frequency)

As a guy who's been playing for a while but is only now getting interested in pedals, I find it unfortunate that the names and most of the sales literature cannot tell you what the damn thing actually does--
 
Source Audio Aftershock does exactly what you're asking with a silly amount of drive engines available. They can be found used for much less than many of the more "boutique" drives. It sounds great, too.
 
Lots of good options here.

Just as an FYI aside:
I looked into this route recently, and was even considering a custom build blender pedal. However, When I tried a Divaricator, I realized that the crossover effect wasn't what I had expected, with distortion. Crossing over the signal changes the amount of gain hitting the drive portion of the circuitry, and the dirt ends up sounding different. I ended up back with a full-range blend pedal (One Control Mosquite). I think the route I'd go in the future would be a full-range drive signal blended with a pass filtered clean blend, like the COG blend on the 66. I tried a Black Sheep head with a 6 band multi-drive arrangement, and it was not terribly intuitive, though I did get used to it. It is just a different way to think about building a drive tone. There's a few ways to skin this cat. Good luck finding what works for you.
 
For example, the same way the Cali76-CB compressor works... You can adjust that HPF to only have the pedal compress the signal above wherever the HPF is set.
This isn't quite accurate according to my understanding of the manual and a conversation I had with the guys over at OE. The sidechain in this only works on keeping frequencies below the HPF out of the input to the threshold, not the actual compression circuit. In essence it keeps the compressor from overworking as a result of too much low end getting into the circuit, but the actual compression being applied, regardless of HPF setting, is operating in a single band capacity across the entire spectrum. Compression from the lowest lows to the highest highs, but without the stuff below the HPF forcing it to be triggered too much, and by things that are largely inaudible or at least more difficult to reproduce.
 
When I tried a Divaricator, I realized that the crossover effect wasn't what I had expected, with distortion. Crossing over the signal changes the amount of gain hitting the drive portion of the circuitry, and the dirt ends up sounding different.
I had the same experience with the Divaricator. I sold mine shortly after acquiring it when the very first run of them became available. I just KNEW I would like running my board this way, and I was flat out wrong. I much prefer full range. Not that this will be the case with the OP, and it's definitely something worth experimenting with.
 
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Crossovers come with different filter slopes and that can really have a large impact on the effects that use them. Shallow filter slopes of -6dB/oct (single pole filter) will gradually transition from one side of the x-over frequency to the other. Steeper filter slopes of -24dB/oct (4th order filter) have a much more defined transition across the x-over frequency, more of an abrupt barrier to cross.

I think people should be aware of these filter slopes, because they will have a huge impact on the way the signal is divided and how the effects on these frequency bands react and sound. The people not liking what a -24dB/oct did for their sound may find that a -6dB/oct is exactly the sounds they had in their head. Some people that don’t find the separation of frequency bands of a -12dB/oct (2nd order filter) crossover strong enough may find a -24dB/oct exactly what they want.

-Frank
 
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Closest I can think isn't out yet but the tech 21 dUg pedal will have a crossover and above that is what gets overdriven and then you blend with a clean signal kinda like the tech 21 dUg amp but that does way more distortion than what you're suggesting

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I have the dUg amp and had great success using it for subtle overdrive on the high end.
 
********* OLD THREAD BUMP ALERT :woot: *********

I'd be curious to know if anyone here found the answer to their tone.

Ordered an Ouroboros in an effort to keep my low end and dial in a little bit of grind/fuzz on the mids/highs. I'm curious as to what else I might cross over.