ratinox
500+ Head-Fier
- Joined
- Nov 16, 2013
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I see the same drain whether the player is playing or not, whether headphones are plugged in or not, whether anything is connected to the line out jack or not. The Rockchip SoC is designed to have a very good idle power profile and that's managed by the OS kernel, something that iBasso probably hasn't touched so that's probably not it. The two most likely culprits that I can think of are the amplifier and the uSD card. Testing the uSD card is easy: eject it when the player is going to be idle for several hours and see what happens. I'll try that myself today
The click or crack that you hear is a relay switching and, I believe, disconnecting the battery from the system (but not the charge circuit). It's normal.
Edit 1: Going on 3 hours with auto power off = never and uSD card removed. Battery gauge still reads full. I've sent a note to iBasso describing the situation and requesting that they look into it and get back to me so I can pass it on.
Edit 2: Four hours and the battery gauge ticked down one block. I think I'm on to something, here. Going to try a few things to see if I can narrow down what's being read from the card. Not expecting word from iBasso for a while; it's something like 3am there.
Edit 3: After a few more hours of testing it by leaving it idle my suspicion has changed slightly. Rather than the uSD card I now believe that it is the player looking at the .album_art directory on the internal store while a track is displayed but not playing. Going on three hours with the uSD card inserted, all album artwork removed, and the .album_art directory emptied followed by a reboot to make sure everything is clean. Excessive-seeming power drain is still there, less than with 300 or so album covers in .album_art, more than with the uSD card ejected and no music queued. This is still all Mk.I Eyeball measurement so your mileage may vary.
Will follow up with a new post once I hear back from iBasso.
The click or crack that you hear is a relay switching and, I believe, disconnecting the battery from the system (but not the charge circuit). It's normal.
Edit 1: Going on 3 hours with auto power off = never and uSD card removed. Battery gauge still reads full. I've sent a note to iBasso describing the situation and requesting that they look into it and get back to me so I can pass it on.
Edit 2: Four hours and the battery gauge ticked down one block. I think I'm on to something, here. Going to try a few things to see if I can narrow down what's being read from the card. Not expecting word from iBasso for a while; it's something like 3am there.
Edit 3: After a few more hours of testing it by leaving it idle my suspicion has changed slightly. Rather than the uSD card I now believe that it is the player looking at the .album_art directory on the internal store while a track is displayed but not playing. Going on three hours with the uSD card inserted, all album artwork removed, and the .album_art directory emptied followed by a reboot to make sure everything is clean. Excessive-seeming power drain is still there, less than with 300 or so album covers in .album_art, more than with the uSD card ejected and no music queued. This is still all Mk.I Eyeball measurement so your mileage may vary.
Will follow up with a new post once I hear back from iBasso.