DACs: Airport Express vs waveterminal vs mini-dac


I know this is impossible to quantify, but with a good stereo system (Cayin TA30 tube integrated amp & Green Mountain Audio Europa speakers), what's the magnitude of difference using the following dacs?

Airport Express (I already have the AX, and can connect it to the integrated amp with RCA's [analog])

Waveterminal U24: computer to USB to waveterminal to amp (waveterminal does the DA conversion)

Inexpensive DAC like ART DIO with waveterminal: computer to USB to waveterminal to ART DIO to amp (ART DIO does DA conversion)

Apogee mini-dac: computer to USB to mini-dac to amp

Other?

What's the best bang for the buck?
mschamberlin3865

Showing 9 responses by audioengr

Bought an AirPort Express and I will be modding it soon... I will let you all know if it is as good as the Transit on a PC.
Unfortunately I dont have a MAC laptop, and I probably will not buy one. I will look into borrowing one for this.
I live in the mountains in central Oregon. 7 miles to the nearest town of 1000.
The Edirol is probably the best choice for iMac. An AES/EBU interface can easily be added to the Edirol with mods, as well as improving its jitter performance. Just a short cable hanging from it with a XLR connector attached.

BTW - Edumke - Did you try iTunes with the Transit with an iMac?

Steve N.
Empirical Audio
Manufacturer
One thing about the Transit - I use it with Foobar player and ASIO plug-in. These are critical on a PC to get the quality out of it. I also playback exclusively with 24/96 through my DAC. This makes all the difference. Leaves all transports in the dust.

I am thinking hard about buying an Airport Express and modding it to have a S/PDIF coax out. This might be the best solution for iMac, although I prefer a wired USB connection.
Having some trouble getting my PC laptop to talk to the AirPort Express....

Looks like I will have to cut it out of the case to mod it - no fasteners.
"I tried the Transit on two separate Apple systems myself, and had several friends come to the same conclusion on different systems.
....the music sounded like it was castrated."

I heard back from M-Audio and they have verified that "in order to match levels of the MAC to PC, the MAC digital out must be set to +8."

I recently tried the comparison of MAC to PC using my Off-Ramp at CES, and initially it really sucked, but after turning off all of the DSP functions of the MAC, it got a lot better. The dynamics and loudness was lower though. I think the +8 setting explains this. M-Audio said that the driver fro the Transit for MAC is actually superior to the PC version.
Racerxnet - forget the sound card. Use an external converter with it's own power supply, or a USB DAC.
Kenn39 wrote:
I was afraid of the word "iTunes". On a WinPC, Foobar2000 gives better sound than iTunes in my opinion.

This is because iTunes on PC does not bypass Kmixer. With Foobar2000, you can usually find an ASIO plug-in that will do this.

Again, I don't know much about the Macs. To be safe, you may want to find out how to get bit-perfect digital stream from a Mac before proceeding.

iTunes on MAC is perfectly fine. Bit-perfect. You can even upsample.

Steve N.
Empirical Audio
Manufacturer/modder