Actually, I'd go even further, and just get a USB DAC and active speakers like the Quad 12L's or Mackie HR824's (which technically don't have a volume control -- only a sensitivity, which is not the same) and a USB DAC/pre like the Benchmark or the Headamp Pico or the Musical Fidelity X-CAN V8P. 
 
The Mackies will be a bit overwhelming, size-wise.  The Quads, less so.