Asus Xonar Essence STX or M-Audio 192 Audiophile

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Dear all
Please help witch card to choose??? Asus Xonar Essence STX or M-Audio 192 Audiophile???
Card will be connected to Cambridge DAC Magic via digital cable and will be used only for stereo.
My setup is: HTPC as a source, Cambridge DAC Magic (D/A converter), DIY Pass Labs Aleph P1.7 preamp, DIY Pass Labs Aleph 2, Mordaunt Short Mezzo 6 loudspeakers…
Thank’s at advance
 
IMO any envy24-based card with SPDIF output pulse transformer (a little black box close to the SPDIF cinch) will give you comparable performance to the Audiophile 192. Just make sure you do not need 176.4 SPDIF output, these cards have a bug and output 88.2kHz instead (unlike ESI Juli, Infrasonic Quartet, Xonar-based cards, etc.).
 
Yea... I've tried an Audigy and an X-Fi and both couldn't pass the DTS test (supposedly checks for bit-accurate playback) when the SPDIF out is fed back to another sound card. (X-Fi was in audio creation mode.) And in daily use both cards' SPDIF did sound slightly different compared to other cards that did pass the DTS test, with me preferring Audigy to (others) then to X-Fi.

More info on the test here:
Testing your sound card for bit-perfect output - the DTS test

So I can say with confidence that Creative cards do alter the output.

As for the rest, it depends on your needs. STX has excellent measured performance for input and output, a headphone amp, and surround sound via SPDIF, while Audiophile 192 is a pro-audio card with balanced analogue and midi I/O, excellent inputs that handle high voltages.

If only stereo digital-out is what you need, go for the Audiophile 192, the extra features of the Envy can be handy. But for an all-rounder, I'd choose STX. Try comparing the analogue outputs of the STX vs DacMagic too. 😉
 
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