One approach would be to improve your DAC. I think you should consider the Audio Horizons TD 3.0 DAC ($2250), which can be obtained on a 30 day trial basis. It's a wonderful performer. You can find it advertised here on Audiogon.
I've used the TD 3.0 with both tube (VTL MB 185 Signature) and solid state (Simaudio W-5) amplification. Also, I've delivered digital signal to it from both a high end transport (Levinson 37) and a file server (SONOS ZP80). In each configuration, the TD 3.0 has been a great performer.
I've used the TD 3.0 with both tube (VTL MB 185 Signature) and solid state (Simaudio W-5) amplification. Also, I've delivered digital signal to it from both a high end transport (Levinson 37) and a file server (SONOS ZP80). In each configuration, the TD 3.0 has been a great performer.