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[M3Pro] Delay before sound plays

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Post time 2020-6-30 23:41:41 |Show all posts |
Edited by markneri at 2020-7-1 00:44

Device: M3 Pro
Firmware: 1.0.9
Storage: SanDisk Extreme 32 GB A1

From the moment a song/video is played I noticed there is about 1 sec delay before you hear any sound, so the beginning of a song/video is cut off.

1. As a Standalone Device - Playing direct from player, headphone out/USB out to external DAC
    a. Play an MP3 or FLAC file.
    b. Switch to another track which is DSF/DSD.
    c. Next track plays, then hear audio after approx. 1 sec.

(you can can test a. and b. in reverse order also)
   

2. As a DAC - Playing audio from Windows 10 PC to M3 Pro as DAC, headphone out
    a. Launch Google Chrome, and go to YouTube.com and play a video.
    b. Video plays, then hear audio after approx. 1 sec.

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Post time 2020-7-1 18:20:59 |Show all posts |
Dear user,

We will report your feedback to the engineer for check. But personly, I can hear obvious delay when using the M3Pro as usb dac.

Best regards
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Post time 2020-7-2 19:11:16 |Show all posts |
Thank you! Appreciate your response, and looking forward to your feedback.
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Post time 2020-7-4 17:30:55 |Show all posts |
Dear Fiio,

I noticed that when playing FLAC files in DAP mode, the sound delay occurs during the ff:

If no track is playing
- start playing a new track
- the new track's sampling rate is 48 Khz or greater

If a track is currently playing
- select a new track
- the new track's sampling rate is 48 Khz or greater
- if the new track's sampling rate is <> of the current track's sampling rate


However, no more delay if:

- choose FLACs or MP3s that have a sampling of 44 Khz or less, whether there is a track currently playing or not.

So these are my findings after a few days of using M3 Pro. I am not sure if this concerns the CPU, RAM, SD card storage speed, DAC chip, power managment, etc.

Hopefully can be fixed in a new firmware update, because I really like the size and looks of M3 Pro
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