Transport with volume control?

I agree with Waip7 in addition if you want to send a digital signal to the amps convertors. Are you referring to D/A convertors that exist in the amp? That would make that a pre-amp-processor. If you are intending to send a digital signal to an amp, you will have no music. The digital signal must be converted to analog first then add the volume control.

Wadia CD players have digital volume controls and digital outputs which you could then connect to your amp's digital inputs. You could also try any standard transport and use the Goldmund's attenuator control.

If your amp has a DAC built in, I think that will be a intergrated amp (pre and power in to one) and it will have volume control on it.

My dealer said that Weiss would produce a transport with volume control in a few mounths,maybe it is on line now.

Although that is technically possible, I have never heard of a CDT with build-in digital volume control. If you wanna run your DACs directly to the power amps, you may consider Z-Systems RDP-1 or TacT RCS for digital attenuation purposes. I have had the TacT RCS on loan, and inserted between my Theta CDT and Theta DAC, RCS sounded much better than my Krell KRC-3 preamp.