How can I disable the "sleep" delay on line in with the 2.1 module?

Ever since unboxing my AMP 2.1 module, i’ve noticed that there’s an issue with the speaker output being delayed a few seconds when audio via line in resumes.

Here’s how you can reproduce/test this:

  • Play anything through the speakers via line in
  • Pause the media play back
  • Wait several seconds (seems to be 10 or so)
  • Resume playing the media
  • Observe that the speaker output is not immediately live
  • Wait about 2-5 seconds
  • The speakers will now be live

I’m assuming that there is some sort of power saving function that turns the amp off/down when there is no input detected and whatever software detects an input is “live” again takes a few seconds to make sure it wasn’t a POP noise like you might get when inserting/removing a connector.

Is there a way to disable this function or at least minimize the time it takes for the speakers to become live after the line-in signal is live?

It’s really annoying to click the “play/resume” button on a video or other media source and immediately see the video resume but the audio does not come in until a few seconds later!


EDIT: I am currently running firmware version 4.6.415145.35

Did you find a solution to turn off the audio sleep, or at least increase the time before sleep?

Not using OEM firmware, no.

If you’re up for it, it’s easy enough to solve by taking matters into your own hands and rooting the device / flashing w/ custom firmware: GitHub - hn/linkplay-a31: Linkplay A31 WiFi audio module alternative firmware (OpenWrt) and device tree source file

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Cheers for sharing! :trophy:

Unfortunately, that is outside my area of knowledge…