USB DAC support on USB OTG enabled devices

[Fahrenheit]

yesterday I bought an iBasso D-Zero MK2 portable DAC/AMP, and I can tell it works like a charm connected to my HTC One X+ (running 4.2 rooted), together with Philips FIdelio M1 mkII headphones and NMP (of course!). The sound is actually more clear and bright, with a great instrument separation.

How did you get it working with the D-Zero Mk2 it does not see it at all for me, only worked on the FiiO Q1 until this latest update.

I dunno .. maybe the HTC One X+ has some particular hardware that match better with D-Zero Mk2

did you allow the "USB debugging"?

[muddy]

Yes, maybe because I've got it rooted as well?
Not sure myself, been a frustrating adventure.

[Fahrenheit]

Yes, maybe because I've got it rooted as well?
Not sure myself, been a frustrating adventure.

I'm rooted too ..

however, after the last updates (since 1.86.0), Neutron crashes if the DAC/AMP is already on
I have to start Neutron first and then turn on the DAC/AMP

[ramsa]

at 10/29 new ver.
NMP will work good on Fiio E-18 at hTC M8

but when other sound effect play in system ex:botton sound / message sound etc.
NMP will crash and let phone work bad ....

[otaku313]

I just got my Kindle Fire 5 working with an AudioQuest Dragonfly and a generic USB OTG cable. Sounds good with my ATH A900's, and just killer with the (much cheaper) Grado SR-60's.
Also using a USB power injector cable to power the DAC (not necessary, but helps the battery life, since I obviously cannot plug into AC while the DAC is plugged in.)

[Ralph]

The new version finally supports my Sony MDR 1 ADAC, but sadly the sound is horrible, it is full of clicks, even with the most basic settings.

[pernel09h]

This is fantastic!




---------------------------------
coque galaxy note 5 coque samsung galaxy note 5

[atwatervillagelawyer]

Hi,

I am using the neutron mp on the samsung galaxy note 3 and wishing to play it through a chord mojo dac/amp with headphones. The chord mojo plays high res files off my pc. For some reason when I play high resolution files like 24-96 on the samsung using neutron mp it will not play it only at 44.1 on the chord mojo. Why is the neutron music player or the samsung phone doing this?

thanks

Michael

[Oppo]

Below please find some more information on which HW/SW configurations glitches/clicks appear too. Please tell if you will need more info.

For me this issue happens on multiple phones/Neutron settings, and details below describe settings where issue DOES occur, unless stated otherwise. I tried different settings, which in my opinion could eliminate glitching, but did not succeed. Below I provide only the settings, which are applicable IMO.

==================================

1. Phone: HTC 1 M8
Neutron versions: 1.87.1, 1.88.1
64-Bit Processing: on/off
VEC: NEON
DRV: OpenSl ES
Direct USB driver: on
32-bit Output: on/off
Frequency: 48000
Hardware latency: 2-192

**********************************
2. Phone: Alcatel 8008D: issue never occurs
Neutron versions: 1.87.1, 1.88.1
64-Bit Processing: on/off
VEC: NEON
DRV: OpenSl ES
Direct USB driver: on
32-bit Output: on/off
Frequency: 44100
Hardware latency: 2-192
**********************************

In below two configurations audio data is sent via USB to external DAC "Oppo HA-2", and this is where
severe glitching/clicking occurs.

3. Phone: HTC 1 M8
Neutron versions: 1.87.1, 1.88.1
64-Bit Processing: on/off
VEC: NEON
DRV: Oppo
Direct USB driver: on
32-bit Output: on/off
Frequency: 44100-352800
Hardware latency:
0-30: extreme glitching
300-400: less glitching

4. Phone: Alcatel 8008D
Neutron versions: 1.87.1, 1.88.1
64-Bit Processing: on/off
VEC: NEON
DRV: Oppo
Direct USB driver: on
32-bit Output: on/off
Frequency: 44100-352800
Hardware latency:
0-30: extreme glitching
300-398: less glitching

Audio source: MP3, FLAC, WAV, WV, with whole bunch of different frequencies, 16-bit; it seems that on some MP3s glitching/clicking is much worse, than on FLACs, surprisingly.

================================

It seems, that on HTC 1 with external DAC plugged in glitching disappears after long continuing listening. (I cannot tell exactly after which period of time, and I'm not sure here), but once another song is selected or forwarded to - glitching always reappears.

NOTE: the same issue with glitching occur in Onkyo HF player, when data is sent through USB to external DAC, hence I believe the problem exists not only in Neutron player.

[m-i-c-k-e-y]

Thank you Dmitri for the USB OTG and DSD support on the Neutron MP. I can say its SQ is really awesome (with Dither, Audiophile Sampling, 64bit processing etc.) on.
My LH Labs Geek Pulse INfinity sings playing DSD64. DSD128 have cracks and bit some skips (maybe due to CPU?). Have a Samsung Galaxy Note 3 as player.

Again thanks for those important features.