In general, volume control in the analog domain is considered preferable to volume control done digitally. Less loss of information that way, especially where a lot of attenuation is used.
I just grabbed a DSPeaker Dual Core that has analog volume control with 1 analog, 1 toslink and 1 USB input. But what makes it amazing is the DSP (digital signal processing). Comes with a mic and will automatically calibrate for your room and speakers from 20-500Hz. It also has balance control, a digital parametric EQ and can compensate for timing delays from different speakers & subs to your listening position. Whoa. Kal Rubinson reviewed it in Nov's Stereophile and Robert Greene gave it an award in TAS (review forthcoming). Note though that the controls are via remote only. But pretty damn awesome.
I just grabbed a DSPeaker Dual Core that has analog volume control with 1 analog, 1 toslink and 1 USB input. But what makes it amazing is the DSP (digital signal processing). Comes with a mic and will automatically calibrate for your room and speakers from 20-500Hz. It also has balance control, a digital parametric EQ and can compensate for timing delays from different speakers & subs to your listening position. Whoa. Kal Rubinson reviewed it in Nov's Stereophile and Robert Greene gave it an award in TAS (review forthcoming). Note though that the controls are via remote only. But pretty damn awesome.