Hi there! Currently running both a Cary CAD 120S MKII tube amp and a McIntosh Mc2300 SS thru an AVA Comparator ABX Switch. Pres amps are Luxman CL-35 III tube and a Mcintosh C41 solid state. Both my AVA Trans. Eight+ pre and AVA Vision SET 120 amp are rotated out at the moment. The Comparator is lots of fun.