What did you finally DO? When looking around did you even consider the OUTLAW RR2150? Very nice amplifier section but maybe not quite the functionality you were looking for. Outlaw hasn't changed this in YEARS and it continues to be well reviewed and has a good owner base.
Magnepan MG1.6qr HSU Research VTF-2 MK3 2x Parasound A23 Parasound P5 Cambridge Audio DACMagic Plus Sony PS3 x4 @3foot runs of 10ga Belden speaker wire. GRADO SR80e on-ear headphones iMac as music server (2009) Panamax 5510 w/) ISO transformer LG 65" B6 OLED display