As I've mentioned, I've been interested in picking up a new dac. I have been looking at Empirical Audio offerings. I sent him the email below.
"
Audio Asylum Email from Dave Robinson:
Hi
I have a question about your Spoiler usb-dac (or any of your other dacs).
I've only been listening to my 16/44.1 wav files. But I'm curious about 24
or 32/96 files and how that is handled by vista > usb out > usb-dac.
You may have read that I'm enamored with XXHighend, and he has a built in test
that checks what rates are supported by the dac and which aren't. At the
moment my Stello DA100 usb-dac only supports the following USING USB...(it
supports higher using coax input).
Start Audio Device Analysis Exclusive Mode support
040FFD38
Supported : 2|16|44100|176400|4
Not supported : 2|24|44100|264600|6
Not supported : 2|32|44100|352800|8
Supported : 2|16|48000|192000|4
Not supported : 2|24|48000|288000|6
Not supported : 2|32|48000|384000|8
Not supported : 2|16|88200|352800|4
Not supported : 2|24|88200|529200|6
Not supported : 2|32|88200|705600|8
Not supported : 2|16|96000|384000|4
Not supported : 2|24|96000|576000|6
Not supported : 2|32|96000|768000|8
Not supported : 2|16|176400|705600|4
Not supported : 2|24|176400|1058400|6
Not supported : 2|32|176400|1411200|8
Not supported : 2|16|192000|768000|4
Not supported : 2|24|192000|1152000|6
Not supported : 2|32|192000|1536000|8
What would your Spoiler Dac support through your USB input?
Does this require special drivers or do you use the standard MS drivers?
Are the drivers built into the dac? hehe am I making any sense? At the
moment all my rips/collection is 16/44.1, but I am curious about the future
(Linn stuff and others).
"
Empirical Audio sent back
"
24/96 files are handled correctly by Vista providing you set 96kHz in the audio options and have a 96kHz native file or
one that is upsampled by Foobar and SRC to 96kHz. All of my USB converters do only 24-bit. Even native CD's are
changed to 24/44.1, making them bit-perfect with Vista.
24/96 using foobar 0.8.3 and SRC is definitely superior to 44.1 when using my USB converters.
Steve N.
http://www.empiricalaudio.com/"
Somehow I don't think this is what I want to hear. Dang... all I want to know is if I have a 24/96 file (or other hirez file) that it won't be resampled upsampled nothing-sampled... just played back... I mean if the dac can accept that bit/sample rate by a usb port then it doesn't matter if it's sent by foobar or XXHE... if they insist foobar does it I have a feeling it's all about the change/resample. have to go to bed... but tomorrow, should I look into how to change "set 96kHz in the audio options" and run the test again on XXHE?(no no, i know it won't work with the stello) I was hoping to pick up his Spoiler...but maybe I'll have to try his loan program first and see how it handles the XXHE test.