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Asus Xonar D2

Sep 10,2007 0

9. Test Results 24bit

 

Review Pages

1. Introduction
2. Retail package
3. Installation
4. Utilities
5. Test Configuration
6. Test Results 16bit
7. Comparison Tests 16bit
8. Conclusion
9. Test Results 24bit
10. Comparison Tests 24bit

 

After the 16bit tests, we proceed to the 24bit tests with the same methodology. We expect to see important differences here, since 24bits is more demanding:

RMAA v6.0.5 Comparison Test Results
Testing 24bit/44.1KHz ASUS Xonar D2 Audio SoundMAX HD Audio
Frequency response (from 40 Hz to 15 kHz), dB: +0.05, -0.04 +0.26, -0.07
Noise level, dB (A): -108.3 -89.2
Dynamic range, dB (A): 108.3 88.8
THD, %: 0.0004 0.0096
IMD + Noise, %: 0.0014 0.047
Stereo crosstalk, dB: -110.5 -87.8
RMAA v6.0.5 Comparison Test Results
Testing 24bit/48.0KHz ASUS Xonar D2 Audio SoundMAX HD Audio
Frequency response (from 40 Hz to 15 kHz), dB: +0.06, -0.04 +0.11, -0.03
Noise level, dB (A): -117.2 -89.3
Dynamic range, dB (A): 117.2 88.9
THD, %: 0.0004 0.0092
IMD + Noise, %: 0.0006 0.014
Stereo crosstalk, dB: -116.6 -88.5
RMAA v6.0.5 Comparison Test Results
Testing 24bit/96.0KHz ASUS Xonar D2 Audio SoundMAX HD Audio
Frequency response (from 40 Hz to 15 kHz), dB: +0.08, -0.05 +0.02, -0.06
Noise level, dB (A): -117.2 -89.5
Dynamic range, dB (A): 117.1 89.1
THD, %: 0.0007 0.0093
IMD + Noise, %: 0.0007 0.014
Stereo crosstalk, dB: -115.3 -85.9

At the best recording quality, the differences are significant:

RMAA v6.0.5 Comparison Test Results
Testing 24bit/192.0KHz ASUS Xonar D2 Audio SoundMAX HD Audio
Frequency response (from 40 Hz to 15 kHz), dB: +0.08, -0.05 +0.04, -0.17
Noise level, dB (A): -116.3 -89.4
Dynamic range, dB (A): 116.3 89.1
THD, %: 0.0013 0.0091
IMD + Noise, %: 0.0012 0.014
Stereo crosstalk, dB: -112.5 -85.3

Looking at the Noise Level, we see a difference of 26.9dB! The TDH% levels are much better than what the SoundMAX HD Audio chipset can offer:

Frequency response graph

 

Noise level graph

 

Dynamic range

 

Intermodulation distortion graph

THD + Noise (at -3 dB FS) graph:

 

Review Pages

1. Introduction
2. Retail package
3. Installation
4. Utilities
5. Test Configuration
6. Test Results 16bit
7. Comparison Tests 16bit
8. Conclusion
9. Test Results 24bit
10. Comparison Tests 24bit

 

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