HiFi Rose RS250 >USB
Kii three and Audio Control input USB
Number of Tracks in Library
~1000 albums
~ 6180 Qobuz Lib. 5398 FLAC tracks on
Description of Issue
On my Roon Remote iPadOS15 in the device setting in Roon i can not choose the Roon DSP mode, only device volume an fixed volume can be set (Roon DSP mode not available in the setting).
In the Rose RS250 in the software setting the volume switch is set to ‘off’.
The output is USB to the Kii three control USB input and speakers.
Dsp volume is device specific as it’s run on the device not the core. Not all devices are capable of running it so Roon wont offer it if it’s not, this appears to be the case here. As Roon is streaming to the Rose that needs to be able to perform DSP volume not the attached speakers via USB.
Digital volume control always requires some use of DSP power. The question is where that does happen.
Fixed volume: Volume controls within Roon are disabled.
Use your (pre-)amp/speakers buttons, wheel or RC to control the playback volume of your system.
Device volume: Roon sends volume control commands to your audio device. It’s up to the audio device to respond to the commands and use its DSP to perform the requested volume changes (or in rare cases probably use an exposed analog volume control).
A mode that could work with the OP’s audio device but “In the Rose RS250 in the software setting the volume switch is set to ‘off’.” – needs to be on for that.
DSP volume: Roon does all the volume processing.
Not available for the OP (I assume the RS250 is used as a networked [Roon Ready] audio device by the OP). Note: Because of potential issues with buffering and latency, this option is usually not available for networked audio devices (by design), but can be used with built-in (soundcard) or locally connected (USB) audio devices on endpoints running Roon, Roon Bridge or Roon Server.
Regardless of the audio device setting above, Roon may always perform “static” (for the song/track) volume leveling and/or headroom adjustments if configured.
