I am using a Rogue Cronus with my Quad 2805s. It is an EL34/KT77 based amp and seems to be a great match and an excellent value. Mine is wired in triode and puts out about 30 - 35 wpc. If you look into the Cronus, consider having Mark O'Brien do the upgrades including caps, resistors, power supplies, wires, tube sockets, triode operation.
I auditioned the Quads with Mac SS gear, which was a little more dynamic and tighter bass, but seemed a bit flat and lacking dimensionality.
Dave