No info about availability.
Dual channel wave splicer
In each channel, two precision half-wave rectifiers (diodes flipped on one) going into a mixer. The rectifiers are inverting, so the phases swap places, and then the mixer (also being inverting) swaps them back to their original phases.
It's a DIY project designed by J3rk, sold via synthcube.com and the panel art+layout is Caleb Condit.
http://www.muffwiggler.com/forum/viewtopic.php?t=97841&postdays=0&postorder=asc&start=0
