The iBasso DX50 Thread - Latest firmware: 1.9.5 - June 30, 2016
Nov 3, 2013 at 11:31 PM Post #5,972 of 18,652
I am using the RSA 71A Blackbird. Fantastic match up. Great bite to the music and very fine layering. Very, very transparent. 
 
Nov 4, 2013 at 12:09 AM Post #5,974 of 18,652
After updating to 1.2.3, i have noticed my DX50 had a clicking sound (or 2 quick clicks) when i switch it off or on. *I always thought it was my desktop motherboard making that sound*
 
 
Any idea why the DX50 elicit such sounds? Did anyone else had similar experience?
 
Nov 4, 2013 at 12:49 AM Post #5,975 of 18,652
  After updating to 1.2.3, i have noticed my DX50 had a clicking sound (or 2 quick clicks) when i switch it off or on. *I always thought it was my desktop motherboard making that sound*
 
 
Any idea why the DX50 elicit such sounds? Did anyone else had similar experience?


In upper left corner of photo:
http://imclub.net.cn/bbs/data/attachment/forum/201310/14/234402qmugoy2eovpucwvd.jpg
It simple electromagnetic relay. I had a clicking sound too.
 
Nov 4, 2013 at 2:11 AM Post #5,976 of 18,652
For anyone having trouble getting to the Recovery Menu, push the Volume Up button just before pushing the Power button and then hold them simultaneously. That will get you to the Recovery Menu every time.

I have update the FAQ accordingly.
Thanks
 
Nov 4, 2013 at 3:23 AM Post #5,981 of 18,652
It seems that iBasso have turned off attenuation of the DAC signal with 1.2.3beta. That is technically a good thing to do and it explains the increased dynamic range.
 
Query: have they otherwise increased treble directly, activated DAC pre-ringing, or done some other further modification to boost treble performance? I have no idea. The increased treble snap is driving increased perception of soundstage width and overall space. I am not entirely in love with that particular change. If they have done something to enhance the treble other than not attenuating the DAC, I hope that they will roll that back as it's really the audio equivalent of a parlor trick rather than an actual increase in sound quality.
 
The player performance is otherwise greatly improved. The DX50 is actually easy to turn on now! Media scanning when I browse is almost instantaneous. Bravo on both counts. I would hate therefore to go back to 1.2.2 just on that basis.
 
I am certainly going to stick with 1.2.3beta for now so I can see what further refinements may be instituted with the official release on a direct comparison.
 
Nov 4, 2013 at 4:10 AM Post #5,982 of 18,652
It seems that iBasso have turned off attenuation of the DAC signal with 1.2.3beta. That is technically a good thing to do and it explains the increased dynamic range.

Query: have they otherwise increased treble directly, activated DAC pre-ringing, or done some other further modification to boost treble performance? I have no idea. The increased treble snap is driving increased perception of soundstage width and overall space. I am not entirely in love with that particular change. If they have done something to enhance the treble other than not attenuating the DAC, I hope that they will roll that back as it's really the audio equivalent of a parlor trick rather than an actual increase in sound quality.

The player performance is otherwise greatly improved. The DX50 is actually easy to turn on now! Media scanning when I browse is almost instantaneous. Bravo on both counts. I would hate therefore to go back to 1.2.2 just on that basis.

I am certainly going to stick with 1.2.3beta for now so I can see what further refinements may be instituted with the official release on a direct comparison.


They have full control over the wm8740 DAC so they can effect the digital de-emphasis feature and the roll-off function. So what I can seem to sense is they have switched the DAC to slow roll-off enlarging the analog audio band. I am not sure about the digital de-emphasis feature though, that's a bit harder to gauge, you have to remember that the chip has digital filtering features. I think those firmware programmers are playing with the dac for the beta version. That means they may set it back the way it was prior to 1.2.3 beta.
 
Nov 4, 2013 at 4:12 AM Post #5,983 of 18,652
Okay, I lied. I just switched back to 1.2.2. Why not - it's easy to go back and forth.
 
I left the Pico Power plugged in and turned on and then listened to the exact same song in from 1.2.3beta in 1.2.2. I am not convinced that there is actually any change of volume. If there is, it isn't much.
 
I am not going to jump to conclusions as to "better". I will only say that there is a significant difference between the sound signature of 1.2.2 and 1.2.3beta and it obviously centers around the increased treble performance of the latter although I am not sure what exact mechanism is at work. More generally 1.2.3beta sounds more dynamic while 1.2.2 sounds smoother and more organic. 
 
Interesting... I await the final version of 1.2.3 with an open curious mind.
 
Nov 4, 2013 at 4:13 AM Post #5,984 of 18,652
They have full control over the wm8740 DAC so they can effect the digital de-emphasis feature and the roll-off function. So what I can seem to sense is they have switched the DAC to slow roll-off enlarging the analog audio band. I am not sure about the digital de-emphasis feature though, that's a bit harder to gauge, you have to remember that the chip has digital filtering features. I think those firmware programmers are playing with the dac for the beta version.

 
This makes sense. Thanks. 
 

Users who are viewing this thread

Back
Top