I'm still using a logitech transporter and pretty happy with it. I am bypassing it's excellent DAC however, because I'm using it's Toslink digital output, feeing into a DSP crossover. And the Transporter serves as the preamp in my system; which is only possible because its digital outs are volume controlled. I have no analog preamp in the system at all-- so; I have only a single D/A conversion in the signal path, coming out of the crossover into to the amps.
On every other brand of streamer I have ever seen or read about; the digital outs are just pass-thru's with no volume control. Hence; if you have a DSP downstream; then there would be at least one D/A conversion out of the streamer, then an A/D conversion in the DSP and another A/D conversion out of the DSP to the amps.
If anyone is aware of another streamer with volume controlled digital outs; please let me know, in case my beloved Transporter ever craps out.
On every other brand of streamer I have ever seen or read about; the digital outs are just pass-thru's with no volume control. Hence; if you have a DSP downstream; then there would be at least one D/A conversion out of the streamer, then an A/D conversion in the DSP and another A/D conversion out of the DSP to the amps.
If anyone is aware of another streamer with volume controlled digital outs; please let me know, in case my beloved Transporter ever craps out.