Dirty Haggard Audio SQRT
Brands:
The SQRT is DHA's take on the old Russian pi's. They tightened up the low end a bit, reduced the range of frequencies being clipped by the first distortion stage, and added the popular 'shift' control which effectively acts as a 'fat/thin' control in addition to widening the mid-scoop.
This circuit does have some of the normal DHA tricks to reduce noise, but it is NOT gated like most other designs!