Astell & Kern Junior (AK Jr.) Impressions Thread
May 28, 2015 at 11:19 PM Post #331 of 3,321
What do you mean by deep sleep?  The sleep function will shut the unit down completely after so many minutes, so it is not like hibernate for a computer.  Also, the manual said that the battery from the Jr. is a 1450mAh 3.7V Li-Polymer Battery.
It looks like it may make it to 12+ hours. What is the longest time for screen display? And does the player support m3u playlist?
 
May 28, 2015 at 11:30 PM Post #332 of 3,321
We've tried the AK Jr as a USB DAC on a Macbook, Macbook Pro (via powered USB), Mac Mini with no problem - sounds great. But when we try a Macbook Air it shows up as an output option but no sound. Anyone think this is a case of the USB port not being able to power it?
 
Any thoughts?
 
Update: Actually - doesn't look like it's using much at all.
 

 
May 28, 2015 at 11:37 PM Post #333 of 3,321
It looks like it may make it to 12+ hours. What is the longest time for screen display? And does the player support m3u playlist?

Settings:
Auto Power Off: Off, 10 mins, 30 mins, 1 hr, and 2 hrs.
Auto Back Light Off: 10 sec, 30 sec, 1 min, 3 mins, 5 mins, 10 mins, and 30 mins.
Sleep Timer: Off, 10 mins, 30 mins, 1 hr, 2 hrs, 3, hrs, 4 hrs, and 5 hrs.
 
Also I can test m3u later but I will have to let the battery test to finish.  However, there is an easy way to create m3u from the command prompt:
 
https://support.microsoft.com/en-us/kb/249234
 
Also, I just noticed that the battery now is at 1/4, so the last leg may go by faster.
 
May 28, 2015 at 11:49 PM Post #334 of 3,321
  We've tried the AK Jr as a USB DAC on a Macbook, Macbook Pro (via powered USB), Mac Mini with no problem - sounds great. But when we try a Macbook Air it shows up as an output option but no sound. Anyone think this is a case of the USB port not being able to power it?
 
Any thoughts?
 
Update: Actually - doesn't look like it's using much at all.
 

Don't know but entirely possible.
 
May 28, 2015 at 11:58 PM Post #335 of 3,321
Settings:
Auto Power Off: Off, 10 mins, 30 mins, 1 hr, and 2 hrs.
Auto Back Light Off: 10 sec, 30 sec, 1 min, 3 mins, 5 mins, 10 mins, and 30 mins.
Sleep Timer: Off, 10 mins, 30 mins, 1 hr, 2 hrs, 3, hrs, 4 hrs, and 5 hrs.

Also I can test m3u later but I will have to let the battery test to finish.  However, there is an easy way to create m3u from the command prompt:

https://support.microsoft.com/en-us/kb/249234

Also, I just noticed that the battery now is at 1/4, so the last leg may go by faster.
thanks. I used foobar for creating a playlist. It might be 10 hrs now lol
 
May 29, 2015 at 4:57 AM Post #336 of 3,321
Ok general use case for battery test.

Settings:
Volume 35 (half of max of 70).
Display brightness 50%.
Auto power off 10 mins.
Auto back light off 10 sec.
Sleep off.
Bluetooth off.
Songs random play and gapless from playlist of 320k MP3s and 16/44 to 24/192 FLACs.

Timeline:
04:39pm: Test start.
08:15pm: About 1/5 down.
11:05pm: 1/2 down.
11:45pm: 3/4 down.
01:01am: Auto shutdown.

Total run time: 8 hrs 22 mins.


8 hours. Cool.,seems pretty good. Excellent test. Thank you.
 
May 29, 2015 at 10:12 AM Post #339 of 3,321
Any impressions regarding the line out?  I've considered also using it as a transport for Hugo. Thanks!
 
May 29, 2015 at 1:43 PM Post #341 of 3,321
 
The AK Jr only offers analog / line out while Hugo only takes digital in.


Ok!  Good to know, just assumed it was like the other AK's.  Guess it's off my list.  Hadn't done enough research, so thanks for the info!
 
May 29, 2015 at 2:06 PM Post #342 of 3,321
Anyone see a case for the Jr?
I saw the ones on the A&K site and they look nice but they are not out yet. Thought maybe Dignis would have some...still too early i guess...
 
May 29, 2015 at 6:56 PM Post #343 of 3,321
My AK Jr just arrived this afternoon.  Just wanted to post a quick couple of observations:
The SanDisk 128GB card from my Fiio X1 was scanned by the AK Jr perfectly and seems to be working great.  The Bluetooth feature paired with my iPhone 6 without issue and now interrupts the music when I get a call..A huge plus for me and worth the price for that alone.  Charging now and listening this weekend.  More later.
 
May 30, 2015 at 8:06 AM Post #345 of 3,321
Anyone can compare this AK Jr to Sony ZX2?
 

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