Roon ARC down sampling everything to 48/24 on Fiio M15S

[Roman_Roth]

Roon Core Machine

ROCK on NUC NUC11TNHi3 8GB ram

Networking Gear & Setup Details

Connected Audio Devices

Fiio M15s

Number of Tracks in Library

2000

Description of Issue

When I listen to any track, roon ARC plays at 48/24 regardless of original quality on my Fiio M15S. Qobuz plays correct quality.
Sample rate conversion is set to for compatibility only.
Everything works fine on iPhone with A&K dongle.
Thanks
Roman

[Suedkiez (Just a fellow user like you)]

The standard audio system in Android and I think iOS (?) runs on 48 kHz, so by default everything is resampled to that. Did you enable the special ARC USB driver in Settings?

[Roman_Roth]

Thanks. Qobuz plays 24/192 no problem. Did try USB driver (?) but no luck

[Suedkiez (Just a fellow user like you)]

Edit: Wait, the Fiio M15s is a DAP and ARC is installed on the Fiio M15s? The USB driver only works on phones out of the USB plug into a USB DAC. ARC doesn’t use native rates on DAPs:

Android and High-Resolution DAPs

Hello - I’m new to Roon, but I wanted to +1 the issue of Roon not supporting native sample rates on Android DAPs. I have a Fiio M15S DAP that I use in the office, and I was disappointed to find that Roon ARC pre-emptively resamples everything to 48KHz rather than just passing the original sample rate audio to the device. I’ve seen a couple different discussions on this, but it really would not be hard for Roon to support these DAPs, they simply need to provide an option to disable resampling. I…

[CrystalGipsy (Resisting the flow!)]

This has been gone over countless times. ARC currently doesn’t support inbuilt DACs in daps or phones only external DACs via USB. It will resample to the native rate the OS reports back to Roon. In the case of FiiO daps this highly depends on what was played before outside of ARC. I have an M11 plus and they all work the same. If just turned on it will upsample to 384/24, if I play a 44.1/16 file via FiiO app or Qobuz etc and then use ARC it will resample to 44.1/16 if it’s higher. That’s the way Roon designed ARC as it was designed for phones not DAPs that circumvent Android resampling. One day they might sort it but as ARC and lots of parts of Roon are broke in other ways who knows when.

[Suedkiez (Just a fellow user like you)]

See feature request here:

Hi-Res on Android? UAPP integration?

Hello fellow Roonaphiles/Roonians/kangaRoons, I’ve been using the Roon free trial on desktop and am thoroughly enjoying the experience streaming Qobuz. I hopped over to my android phone to use the app with my Zorloo Ztella and noticed that everything was being converted to 48/24. Upon looking into this, the Android mixer seems to be the culprit. But I noticed that there are apps such as UAPP that are able to bypass this and able to get bit/sample perfect playback. What I’m thinking is are you…

or ARC specific:

Roon ARC bitperfect playback for DAPs

As of now, ARC always performs SRC so it’s stuck at awful 44.1kHz. Please add option to play bit-perfect audio for supported devices. (e.g. DAPs)

[Roman_Roth]

Thanks. Major disappointment! Hi-res all the way until the last link in the chain