06-17-2020, 01:25 PM
OK. But UPnP is using the actual HW volume right? This means I must turn off the mixing of toslink and moode input to the DSP since otw the signal on the toslink would get max amplitude as soon as connecting through Airplay. This I can live with. It also means I have to remove volume control dependent DSP which is a bit more sad. This makes me ask: how difficult is it to change such that Airplay also uses the HW vol as the UPnP? And if not easy enough I need to work around the above and chose "software" or "hardware", where software would mean I get tandem volume controls but could keep volume depending DSP and would keep maximum signal levels to the very end which means maximum quality. However, to use a different app to set volume is not ideal... So for ease of use I should probably use the "hardware" But that brings me to the question: how is the Airplay softvolume (used in "hardware" mode) quality. Using my HW volume would give max signal level to the very end of the signal chain meaning a 96dB SNR= good quality (limited by Airplay 16bit) and a 112dB DNR (limited by my DAC). Do I still get that with Airplays softvolume when moOde in "hardware" mode; where does the softvolume sit in the signal chain, and is/can it output 24bit to my 24bit capable DAC/DSP such that I still get 112dB DNR when using Airplay? (assume my system can produce 125dB peak, if the Airplay softvolume outputs 16bit, I get a noise floor of around 125-96dB= 29dB which is very noisy. If it is 24bit the noise floor is 125-144 = -19dB but limited by my DAC at 125-112 = 13dB which is noisy but not terrible).
