I recently acquired a Luxman M-700u amplifier and a CL-38uc preamplifier.  While the M-700u does not possess the nth degree of control on the Wilson Sabrina like the Symphonic Line Kraft 250, it is sounding very good indeed.  Maybe I will consider the 900u as a future upgrade.  I also replaced the Kimber selects with Acoustic Revive solid core copper cables, feel that they are sounding better with the Sabrina.