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Simply email me at info AT audio-evolution.com for any issue you have.
Thanks !
It’s good to know for fellow forum members who will have a DAC issue with their Android device using USB Audio Recorder PRO.
I'm not sure if it has up/down control. Usually, it's the other way around: the device has a physical up/down knob and the software gets a trigger when you press it. Anyway, they talk about volume control: I cannot check here, but I assume the mixer tab shows the volume control you mentioned?
I don’t have a HRT microStreamer.
As far as I understand, the HRT microStreamer can be used as a headphone amplifier/DAC, and it doesn’t have a volume control knob: its volume can be adjusted by USB HID-capable music playback software.
http://www.usb.org/developers/devclass_docs/Hut1_12v2.pdf
Edit: a fellow forum member has just informed me that the volume control of the mixer tab can adjust the sound volume of his Sabre ES9023-based HiFiMeDIY Sabre:
"Volume Level is controlled by the normal volume control keys on your computer."
http://hifimediy.com/index.php?route=product/product&product_id=83
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USB Audio Recorder PRO 1.2.0 is released with support for the HRT microstreamer. Perhaps more DAC's that were recognized but didn't play or played silence may work now, so let me know if yours does. Also added a 'Next song' button and the files in the play list directory are now played back alphabetically sorted.
I also did some more investigation in adding a service that other music players can use to stream their audio through USB and it is looking good.
Thanks!
A big step forward!
As far as I am concerned, the USB Audio Recorder PRO player is perfect if a shuffle play mode is added:
. Actual "one-after-another" play mode: N = N + 1
. Shuffle play mode: N = N + random number
To my ears with a Galaxy S3, an ODAC, a Neco Soundlab V3 amp and Mad Dog headphones, the USB Audio Recorder PRO is the highest sound quality music playback software in comparaison with Neutron and Poweramp, thanks to its large buffers (?).
http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1080#post_8968882
And I’m not the only one.
http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/2175#post_9373681