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Aune T1 USB Tube DAC+Amp Discussion Thread ***See first post for FAQ*** - Page 341

post #5101 of 5104

Story very simple. I got my first hdtv in 2000 so I went with hdtv00 14 years ago when I first started going online, well ok not first started to but when I settled in. Good times.

post #5102 of 5104

^^Nice to hear, I was a bit late jumping to the hdtv bandwagon :P

post #5103 of 5104

What country plug does the Aune come with stock. I'm trying to locate a ??? to Australian adapter.

I have a universal adapter here, but it is a little loose, I want something higher quality. 

Edit: Found the answer: UK plug.


Edited by H20Fidelity - Today at 2:23 am
post #5104 of 5104

Macbook pro right side usb port only plays in 16 bit mode, let's call it port A.

Change to left side usb port (port B), it works full 24. Use usb hub (ports C) and it also works with 24 bit support.

 

However the 16 bit mode in-between port A and ports B to C is quite different. I'm using a HD600 and I notice that port A the sound is more forward, the bass is punchier, in port B to C the sound is more neutral, cleaner.

 

Can anyone with a mac reproduce or confirm this effect? Thanks ;)

 

EDIT:

Connecting to port A the kernel reports:

"17/04/14 10:25:36,000 kernel[0]: USBF:    5704.586    There is not enough USB isochronous bandwidth to allow the device "DigiHug USB Audio" at location 0x14500000 to function in its current configuration (requested 582 bytes for endpoint 0x3 )"

 

- Port B through 3.0 USB hub does not play 24 bit, no kernel output.

- Port B through 2.0 USB hub plays 24 bit.

 

My hypothesis is that OSX kernel is rather strict when it comes to managing USB devices, each port should be able to play full 24bit. They are all USB 3.0 so with a couple of connected devices bandwidth shouldn't be an issue.

 

What may be happening is that the kernel is assigning isochronous support to at least one port when enumerating them at boot up. Further devices don't seem to be able to request this privilege, which is strange.

 

EDIT2:

In MIDI configurations setting 16 bit input allows the output to be set up to 24bit. Thread with science.


Edited by incude - Today at 8:29 am
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