I own the original Kemper rack mounted non powered head and due to a lengthy divorce with my setup in storage, I have completely forgotten how to connect my Fryette PS2 to the Kemper Head.
Not that it matters at least I don't think but I run into two Mission Engineering that it appears they have discontinued which contain two Eminence expanded frequency guitar spears according to ME. They are super light and sound amazing, but you typically have to turn off the Cab Sim.
According to ME who used to be PCB clients of mine while working at Cadence and OrCAD, these were originally supposed to be a SW exclusive, however I did see them in both slant and straight and even in black on MEs website a few years back. I cannot recommend them enough for those who don't use the Kemper Kab or any other FRFR setup.
I never ran them in stereo however that is now an option, I simply forgot how to properly connect the non-powered rack mount head and the Fryette Power Station 2.
Any advice from someone who is running a similar setup would be greatly appreciated.
Sincerely, Garett, Sustain Guitars (website is being revamped currently)