Asus D2X - Manual (Page 76)

70 ASUS Xonar D2X
Frequency range Response
From 20 Hz to 20 kHz, dB -0.10, +0.04
From 40 Hz to 15 kHz, dB -0.02, +0.04
Xonar D2X Audio Card
RightMark Audio Analyzer test
Testing chain: External loopback (line-out - line-in)
Sampling mode: 24-bit, 48 kHz
Summary
General performance: Excellent
Frequency response
Frequency response (from 40 Hz to 15 kHz), dB: +0.04, -0.02 Excellent
Noise level, dB (A): -116.4 Excellent
Dynamic range, dB (A): 116.3 Excellent
THD, %: 0.0005 Excellent
IMD + Noise, %: 0.0011 Excellent
Stereo crosstalk, dB: -115.3 Excellent
IMD at 10 kHz, %: 0.0006 Excellent