Lovepedal HI VOLT http://www.lovepedal.com/hi-volt-custom-i/
Hi Volt is an extremely powerful, fully saturated, mid to high gain JFET unit.
Through much experimentation, the Hi Volt offers a cascaded, multiple JFET design. Internally charge pumped to 16VDC feeding a "post" 16 volt, high headroom, custom tuned, active three-band eq...
With it's generous amount of gain on tap, the Hi Volt gives you a diverse palate of everything from blues to metal, Marshall to Mesa and so on. When playing chord, the distortion remains tight and focused. When playing single note lines, they are supported and carried by Hi Volt's beautifully, rounded low end and it's amp-like precision to your pick attack.
The Hi Volt can take an amp of any size and give it an unprecedented amount of depth and mass. It works exceptionally well with both single coil and humbucking pickups.