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ASUS M2A-VM |
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Rightmark Audio Analyzer
We used Rightmark Audio Analyzer together with a loop-back cable to analyze the quality of the on-board audio solution.
Summary
| Frequency response (from 40 Hz to 15 kHz), dB: | +0.25, -0.31 | Good |
| Noise level, dB (A): | -73.9 | Average |
| Dynamic range, dB (A): | 73.8 | Average |
| THD, %: | 0.011 | Good |
| IMD, %: | 0.059 | Good |
| Stereo crosstalk, dB: | -71.9 | Good |
| IMD at 10 kHz, %: | 0.120 | Average |
General performance: Good
For a low cost motherboard I find that it delivers good on-board audio quality. Enthusiasts who want to build the ultimate Media PC are probably going to use an external sound card that they can patch directly into their amplifier.
Frequency Response
| Frequency range | Response |
| From 20 Hz to 20 kHz, dB | -1.68, +0.25 |
| From 40 Hz to 15 kHz, dB | -0.31, +0.25 |
Noise Level
| Parameter | Left | Right |
| RMS power, dB: | -71.3 | -70.8 |
| RMS power (A-weighted), dB: | -73.6 | -73.9 |
| Peak level, dB FS: | -57.8 | -58.4 |
| DC offset, %: | -0.00 | -0.00 |
Dynamic Range
| Parameter | Left | Right |
| Dynamic range, dB: | +70.9 | +71.4 |
| Dynamic range (A-weighted), dB: | +73.8 | +74.0 |
| DC offset, %: | -0.00 | -0.00 |
THD + Noise (at -3 dB FS)
| Parameter | Left | Right |
| THD, %: | 0.0107 | 0.0107 |
| THD + Noise, %: | 0.0535 | 0.0569 |
| THD + Noise (A-weighted), %: | 0.0441 | 0.0426 |
Intermodulation distortion
| Parameter | Left | Right |
| IMD + Noise, %: | 0.0616 | 0.0586 |
| IMD + Noise (A-weighted), %: | 0.0531 | 0.0501 |
Stereo crosstalk
| Parameter | L <- R | L -> R |
| Crosstalk at 100 Hz, dB: | -66 | -68 |
| Crosstalk at 1 kHz, dB: | -71 | -69 |
| Crosstalk at 10 kHz, dB: | -72 | -73 |
IMD (swept tones)
| Parameter | Left | Right |
| IMD + Noise at 5 kHz, %: | 0.0636 | 0.0611 |
| IMD + Noise at 10 kHz, %: | 0.1258 | 0.1263 |
| IMD + Noise at 15 kHz, %: | 0.1751 | 0.1733 |
