RightMark Audio Analyzer test report
These measurements were kindly made and given by Hao-Wu from Taiwan. About them, Hao-Wu says,
I have to emphasize that I use “NOT” very professional
X-Fi XtremeMusic soundcard (which is a entertainment card not recording
card) to measure the sound quality. So if measuring with professional
soundcards (creative 1212M, creative 1616M, M-audio Delta series, MAYA44
etc.) or equipments, I think the data may be even more accurate and
impressive.
Best regards,
Hao-Wu Lin
Hao-Wu also informed me that he used 1% precision resistors on the output buffer. I think the measurements would
be even better with 0.1% precision resistors, as specified in the "Fancy" BOM.
Setup
| Testing device |
ezdac with PCM1794/AD8610 |
| Sampling mode |
16-bit, 44 kHz |
| Interface |
|
| Testing chain |
External loopback (line-out - line-in) |
| RMAA Version |
6.0.5 |
| 20 Hz - 20 kHz filter |
ON |
| Normalize amplitude |
ON |
| Mono mode |
OFF |
| Calibration singal, Hz |
1000 |
| Polarity |
inverted/inverted |
Summary
| Frequency response (from 40 Hz to 15 kHz), dB |
+0.02, -0.15 |
Very good |
| Noise level, dB (A) |
-94.2 |
Very good |
| Dynamic range, dB (A) |
92.9 |
Very good |
| THD, % |
0.0029 |
Excellent |
| THD + Noise, dB (A) |
-84.6 |
Good |
| IMD + Noise, % |
0.0069 |
Excellent |
| Stereo crosstalk, dB |
-93.7 |
Excellent |
| IMD at 10 kHz, % |
0.0072 |
Excellent |
| General performance |
|
Excellent |
Frequency response
| 20 Hz to 20 kHz, dB |
-0.26, +0.02 |
| 40 Hz to 15 kHz, dB |
-0.15, +0.02 |
Noise level
| |
Left |
Right |
| RMS power, dB |
-93.1 |
-93.2 |
| RMS power (A-weighted), dB |
-94.2 |
-94.2 |
| Peak level, dB FS |
-80.8 |
-80.9 |
| DC offset, % |
+0.0 |
+0.0 |
Dynamic range
| |
Left |
Right |
| Dynamic range, dB |
+91.8 |
+91.8 |
| Dynamic range (A-weighted), dB |
+92.9 |
+93.0 |
| DC offset, % |
+0.00 |
+0.00 |
THD + Noise (at -3 dB FS)
| |
Left |
Right |
| THD, % |
+0.0030 |
+0.0028 |
| THD + Noise, % |
+0.0059 |
+0.0058 |
| THD + Noise (A-weighted), % |
+0.0060 |
+0.0058 |
Intermodulation distortion
| |
Left |
Right |
| IMD + Noise, % |
+0.0070 |
+0.0069 |
| IMD + Noise (A-weighted), % |
+0.0060 |
+0.0060 |
Stereo crosstalk
| |
Left |
Right |
| 100 Hz, dB |
-95 |
-90 |
| 1 kHz, dB |
-93 |
-92 |
| 10 kHz, dB |
-91 |
-85 |
IMD (swept tones)
| |
Left |
Right |
| IMD + Noise @ 5 kHz, |
0.0076 |
0.0072 |
| IMD + Noise @ 10 kHz, |
0.0072 |
0.0071 |
| IMD + Noise @ 15 kHz, |
0.0070 |
0.0070 |
e-mail:
evan@cellandtissue.com.
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