No v specifikacii zvukovky je napisane taketo nieco:

Signal-to-Noise Ratio (20kHz Low-pass filter, A-Weighted):
Stereo Output: 109dB
Front and Rear Channels: 109dB
Center, Subwoofer and Side Channels: 109dB

Total Harmonic Distortion + Noise at 1kHz (20kHz Low-pass filter):
0.004%

Ale potom aky vyznam by malo toto:

Frequency Response (-3dB, 24-bit/192kHz input):
<10Hz to 88kHz (Stereo only)

A nerozumiem, aky vyznam by malo pre nich tam davat ten filter, ze oreze vsetko nad 20kHz, zeby si povedali, ze plastove bednicky vo vacsine kompoch to aj tak nezahraju, tak naco tym zbytocne zatazovat procak X-fi..

Kazdopadne dost rozmyslam nad touto zvukovkou http://www.audiotrak.net/products/prodigyhd2/

Ale dost ma odradza tato veta headphone output with 1/8" connector routed via JRC4580 dual OpAmp. Tie JRC tu boli v operakoch v tej tabulke to najhorsie, sice nie presne tento typ, ale asi to nebude nic moc..