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Old 2nd April 2011
  #1
Play & Record 10 times - AD/DA loop back test

I've been wondering:
When people compare audio interfaces, they just record one signal into their DAW with different audio interfaces and then try to hear those incredibly small detail differences.

Wouldn't it be much better idea to take one stereo signal and then play & record it 10 times using the same audio interface. This way you'll get 10x the conversion artifacts ---> you can hear much better which audio interface does the most damage to the signal and what this damage is.

I'd be interested in these 10x play&record loopback shootouts.

Any volunteers? I can provide RME Fireface 400 results for the interested people. First we should come up with a stereo material which should reveal the signal degradation as well as possible. Maybe a well recorded acoustic material would do?

EDIT:

All the test results people post in this thread will be mirrored in this URL, including the original reference audio file:

AD/DA 10x Loopback Test Results

Current audio interface results in the above URL:

Apogee DA16x into the AD16x (connected by X-HD)
Digidesign 192 IO
Echo Audio AudioFire 12
Echo Audio Layla 24
Focusrite Saffire LE
Metric Halo ULN 8
Motu 2408 Mk3
Mytek Digital 8x192
Prism Orpheus
RME Fireface 400
Roland MMP-2 with frequency responce matched + Drawmer M-Clock
Steinberg MR816
Universal Audio 2192