USB DACs with 24/192 via USB

Are you sure the Apogee Mini supports high sample rates over its USB port?

Bigamp

My point is as Onhwy61 said... does the "???" DAc support more than 16/44-48 over USB?

Can DACs in fact accept higher word lengths and bit rates using USB as the conduit, or why not?

My own meager trials indicate to me using USB as the only interface for music is not as positive as is using a sound card which outputs via coax, or AES instead.

I've not tried the Wavelength designs on USB, but sure wouldn't mind doing it just to see the degree of diff. But I am satisfied a sound card, either on board or USB which allows a pass thru of higher bit information bests USB alone.

...and yes, I've even bought the De ASIO driver online and implemented it too.

Now I'm not saying the sound isn't any good going USB alone... I'm saying placing a card in between the PC and stand alone DAC sounds better noticeably.... even with an inexpensive USB sound card!

What gets me in this topic is the notion USB only transmutes limited bit rates.

NOTE > Onhwy61 is right agbout many DAC makers indicating high word lengths and bit rate decoding, but they're not as clear on which or if all the interfaces of their DACs do indeed handle them... ya have to look closely to see who's doing what where.

Then too is the idea regardless the numbers... some will outperform others, as it's seldom as simple as a numbers game entirely.

I kinda think USB does transmute 24/96 presently.. or my sony sure thinks it does... but it's old, and may be developing a case of 'bitzhymers'.

Blindjim, I see where your external soundcard would be better than an internal one. This sounds like a good solution. And I agree that a 24/192 DAC may only be able to receive 24/96 signals or less via particular inputs. The buyer has to look at the product specs to make sure the DAC can receive the higher sample rates via USB, or that its even a true 24/192 DAC.

For example, the new Emmlabs DAC2 is a 24/96 DAC, but it can only receive 24/48 via USB -- I would love to buy this DAC for its sound but it's a non-starter for me because it can't even receive 24/96 via USB.

The other background fact here is that my PC server is 60 feet away from my audio rig. I run a 30 meter fiber optic USB cable between PC and rig. This only goes up to 24/96. I suppose I could also run a 60 foot AES cable for 24/192 files, as you suggested; or put an external sound card at the end of that 30 meter USB cable and then feed 24/192 AES from the sound card into the DAC. But best case would be only a 30 meter USB cable that does 24/192 (no sound card or USB-to-digital converter).

There are DACs out there that take a 24/196 USB input, such as the Emu 404 DAC. I'm looking for a higher-quality DAC, such as an Emmlabs or whatever, that can do this. That way, one cable that does it all and great sound.

I

The other background fact here is that my PC server is 60 feet away from my audio rig.

My server is two floor below my rig in my basement. I use a Modwright Transporter, which is an outstanding wireless server using an AKM DAC. You can also wire it to the network via cat-5 (Ethernet) cable. Unfortunately the specs are up to your standards (I believe it's limited to 24/92), but a network solution would eliminate your USB limitation.

The EMU 404 uses a USB 2.0 interface which is capable of higher bandwidth than the standard (original) USB interface that most of the others mentioned here are limited by. This is why it is capable of the higher resolution. As I pointed out, you can also use a Firewire DAC to get higher resolution also via the greater throughput capacity of that bus.

well if you can’t relocate the server or just don’t want to, there are the usual ways of getting the music into the system… wireless laptop into the DAC via USB, or via an USB sound card and THEN into the ??? DAC. NOTE the shorter the USB cable there, the better.

Or you could choose one of the wireless sort of devices like the Squeeze Box, Duet, etc. and eliminate the laptop from that chain. Also, an iPhone for the remote track picking duties, or a laptop again, purely for selecting tracks or URLs.

I have my main ‘audio’ PC on my Sound Anchor rack just above the BC DAC3 and hook to it by a Stereovox BNC cable. I can interface with it in a number of ways, lengthy USB cable & USB hub for keyboard and mouse, with a small VGA LCD monitor. Or by remote desktoping into it with the laptop, or by using the HDMI output of it’s video card into my HDMI receiver to an overhead BenQ projector. I prefer to use the LCD, USB hub, and a small folding table to rest the monitor onto.

I’ve tried a fair number of approaches to get HDD based, and digital audio into my stereo. Single box CDPs, CDP + DACs, servers + laptop going USB alone, two different desktops using various sound cards and/or USB with several ASIO drivers.

My fav in the end is using my old XP Home desktop, a good PCI sound card within it, a pretty good power cord for it, the Stereovox coax cable, and the DAC3…. After all those trials.

At the “computer audiophile” website you’ll get lots more input/insights on how others have done things. Stuff like what can be done, and what can’t with USB.

The one particular thing I noticed overall at that site? I get the notion feeding a really nice DAC with a very good to excellent sound card is best. My own meager attempts seem to bare that out too…. so far anyhow. Although I am limited to only 24/96… I’m not unhappy about it. I’VE NOTICED SCANT LITTLE DIFF IN THE 24/96 TO 24/192 debate either… not enough to warrant my investing far more into a DAC which can and does decode the 192, 188, etc bit rates… I’ll just stick with the 96ers for a while more. It sounds excellent to me on my stereo…. So I’m happy now.

Good luck.