u/SuccessfulHunt4982

I’m facing a specific sample rate issue with local MQA playback on my FiiO M21.

The Issue:

Previously, playing local MQA files via UAPP worked perfectly. UAPP would show "Direct 88.2kHz" and the M21’s Android Notification Bar would correctly change to match that sample rate.

Now, the notification bar strictly stays locked at 44.1kHz during MQA playback. This happens on both 3.5mm and 4.4mm outputs.

Key Points:

Inside UAPP, it still shows "Direct 88.2kHz" and the physical LED glows Purple (MQA), but the system status bar refuses to scale up.

Standard Hi-Res FLAC files work perfectly. When I play a native 24-bit/96kHz FLAC file, the notification bar immediately switches to "96kHz".

I strictly play offline local files from the SD card with Wi-Fi turned off.

Troubleshooting Done:

Full Factory Reset (Did not fix it).

Downgraded full firmware package from v1.0.8 back to v1.0.7 via Local Upgrade (Did not fix it).

Since standard 24/96 FLAC files switch sample rates perfectly, the issue is strictly isolated to MQA.

Has anyone seen this MQA sample rate lock on the M21? Is this a system bug or a hardware decoder defect? Thanks!

I want to know if my FiiO m21 battery drains normally. I charge it using the 20-85 charging method. Now it's 84% ​​to 56% from 3pm to 5pm listening to DSD 64 128 256 files with balance output at low gain volume around 34 for 3 and a half hours, is that normal? When I sleep at night, I use D.mode to listen to music. The next day, it went from 42% to 15% from 3:15pm to 5:15pm I listen to flac file at low gain volume34 and the file quality was 16/44.1 16/48 24/44.1 24/48 24/96 in shuffle mode with UAPP Is 27% drain normal because their website says it can last 12.5 hr with balance output

Which music app should I use?

Build in FiiO music app or UAPP or Power Amp?

Any suggestions and thought?

Which app made less battery consume

My m21 was finally arrived...

The wait is over...

They sound amazing...