Welcome Modest Cargo
The KA-6100 is built like a tank, a beautiful silver faced unit with twin meters, levers, knobs and dials. I have a KA-9100 which sounds great. Should be a very nice match with your M3Tis. When you're ready to give up the KA-6100 you may want to consider a nice 5-10 watt per channel SET tube amp which can really make the M3Tis sing.
I'd find a friendlier forum for a discussion about speaker wire or interconnects. Folks get a bit hot on the subject here, and the local consensus is go with lamp cord.
One thing though, if your KA6100 has those weird little speaker wire cage terminals, you'll have to go with some pretty thin wire. I'd recommend Mapleshade Audio Clearview Golden Helix speaker wire.
