RightMark Audio Analyzer test report

Testing deviceGigaworks modified
Sampling mode24-bit, 44 kHz
Interface
Testing chainExternal loopback (line-out - line-in)
RMAA Version6.1.2
20 Hz - 20 kHz filterON
Normalize amplitudeON
Level change-1.1 dB / -1.2 dB
Mono modeOFF
Calibration singal, Hz1000
Polaritycorrect/correct

Modifications: Removed second opamp. Removed L+,L-,R+,R- input caps. Removed filter caps around opamp, C1, C2, C3 C4, C6. R13 and R14 lifted to get signal out directly to RCA. Check DC offset before plugging in. The mod is temporary, will test with Cirrus Logic’s low-pass filter example later on…

Summary

Frequency response (from 40 Hz to 15 kHz), dB+0.07, -0.60Good
Noise level, dB (A)-109.9Excellent
Dynamic range, dB (A)109.8Excellent
THD, %0.0008Excellent
THD + Noise, dB (A)-96.2Excellent
IMD + Noise, %0.0020Excellent
Stereo crosstalk, dB-108.7Excellent
IMD at 10 kHz, %0.0021Excellent
General performanceExcellent

Frequency response

Spectrum graph

From 20 Hz to 20 kHz, dB-1.07, +0.07
From 40 Hz to 15 kHz, dB-0.60, +0.07

Noise level

Spectrum graph

LeftRight
RMS power, dB-104.9-105.6
RMS power (A-weighted), dB-109.6-110.2
Peak level, dB FS-87.4-87.5
DC offset, %+0.0+0.0

Dynamic range

Spectrum graph

LeftRight
Dynamic range, dB+104.9+105.8
Dynamic range (A-weighted), dB+109.5+110.2
DC offset, %+0.00+0.00

THD + Noise (at -3 dB FS)

Spectrum graph

LeftRight
THD, %+0.0008+0.0008
THD + Noise, %+0.0016+0.0016
THD + Noise (A-weighted), %+0.0015+0.0016

Intermodulation distortion

Spectrum graph

LeftRight
IMD + Noise, %+0.0021+0.0020
IMD + Noise (A-weighted), %+0.0014+0.0014

Stereo crosstalk

Spectrum graph

LeftRight
Crosstalk at 100 Hz, dB-108-105
Crosstalk at 1000 Hz, dB-107-109
Crosstalk at 10000 Hz, dB-93-101

IMD (swept tones)

Spectrum graph

LeftRight
IMD + Noise at 5000 Hz,0.00200.0021
IMD + Noise at 10000 Hz,0.00200.0021
IMD + Noise at 15000 Hz,0.00200.0021