Think Pitchfactor, quintessence, and now the Hedra. There are some others too. I own the Hedra and the Quintessence and they are both imperfect pedals.

The Hedra’s tracking is excellent. I think overall it’s a great pedal, but it’s expensive and has a little too much functionality/a little difficult to navigate/dial in. It also lacks a dry output.

Quintessence is good, simple and easy to use, but the tracking doesn’t match the Hedra.

I think there’s a place in the market for something in between. And I think EHX are the ones who could do it perfectly.