5
ECS A770M-A Review
Fan Noise & Overclocking »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): | -79.1 | Average |
| Dynamic range, dB (A): | 79.2 | Average |
| THD, %: | 0.010 | Good |
| IMD, %: | 0.036 | Good |
| Stereo crosstalk, dB: | -77.2 | Very good |
| IMD at 10 kHz, %: | 0.108 | Average |
General performance: Good
Even though the Realtek ALC882 audio codec has support for 8 channels, which would let you think the audio quality is very high, the sound quality is only "good", which is actually slightly below average of the motherboards we tested so far.
Frequency Response
| Frequency range | Response |
| From 20 Hz to 20 kHz, dB | -1.66, +0.25 |
| From 40 Hz to 15 kHz, dB | -0.31, +0.25 |
Noise Level
| Parameter | Left | Right |
| RMS power, dB: | -76.7 | -76.3 |
| RMS power (A-weighted), dB: | -79.1 | -79.1 |
| Peak level, dB FS: | -64.1 | -63.6 |
| DC offset, %: | -0.00 | -0.00 |
Dynamic Range
| Parameter | Left | Right |
| Dynamic range, dB: | +77.0 | +77.3 |
| Dynamic range (A-weighted), dB: | +79.2 | +79.2 |
| DC offset, %: | -0.00 | -0.00 |
THD + Noise (at -3 dB FS)
| Parameter | Left | Right |
| THD, %: | 0.0101 | 0.0103 |
| THD + Noise, %: | 0.0319 | 0.0297 |
| THD + Noise (A-weighted), %: | 0.0268 | 0.0260 |
Intermodulation distortion
| Parameter | Left | Right |
| IMD + Noise, %: | 0.0364 | 0.0362 |
| IMD + Noise (A-weighted), %: | 0.0300 | 0.0298 |
Stereo crosstalk
| Parameter | L <- R | L -> R |
| Crosstalk at 100 Hz, dB: | -72 | -70 |
| Crosstalk at 1 kHz, dB: | -76 | -74 |
| Crosstalk at 10 kHz, dB: | -77 | -76 |
IMD (swept tones)
| Parameter | Left | Right |
| IMD + Noise at 5 kHz, %: | 0.0430 | 0.0428 |
| IMD + Noise at 10 kHz, %: | 0.1153 | 0.1166 |
| IMD + Noise at 15 kHz, %: | 0.1670 | 0.1664 |
Dec 1st, 2024 21:23 EST
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