RightMark Audio Analyzer test report
Zipit Z2 headphone output

tested by J. Beale  Jan. 9 2011
Testing device Zipit Z2 headphone out
Sampling mode 16-bit, 44 kHz
Interface  
Testing chain Z2 Headphone -> Echo Audio MIA
RMAA Version 6.2.3
20 Hz - 20 kHz filter ON
Normalize amplitude ON
Level change -0.7 dB / -0.8 dB
Mono mode OFF
Calibration singal, Hz 1000
Polarity correct/correct

Summary

Frequency response (from 40 Hz to 15 kHz), dB
+0.14, -0.63
Good
Noise level, dB (A)
-89.7
Good
Dynamic range, dB (A)
89.4
Good
THD, %
0.0068
Very good
THD + Noise, dB (A)
-78.6
Average
IMD + Noise, %
0.012
Very good
Stereo crosstalk, dB
-89.7
Excellent
IMD at 10 kHz, %
0.015
Very good
General performance
 
Good



Frequency response

Spectrum graph

From 20 Hz to 20 kHz, dB
-0.84, +0.14
From 40 Hz to 15 kHz, dB
-0.63, +0.14



Noise level

Spectrum graph

 
Left
Right
RMS power, dB
-88.0
-88.1
RMS power (A-weighted), dB
-89.7
-89.7
Peak level, dB FS
-73.3
-73.5
DC offset, %
-0.0
-0.0



Dynamic range

Spectrum graph

 
Left
Right
Dynamic range, dB
+87.9
+88.0
Dynamic range (A-weighted), dB
+89.4
+89.5
DC offset, %
-0.00
-0.00



THD + Noise (at -3 dB FS)

Spectrum graph

 
Left
Right
THD, %
+0.0110
+0.0027
THD + Noise, %
+0.0136
+0.0085
THD + Noise (A-weighted), %
+0.0160
+0.0075



Intermodulation distortion

Spectrum graph

 
Left
Right
IMD + Noise, %
+0.0142
+0.0107
IMD + Noise (A-weighted), %
+0.0115
+0.0091



Stereo crosstalk

Spectrum graph

 
Left
Right
Crosstalk at 100 Hz, dB
-90
-90
Crosstalk at 1000 Hz, dB
-88
-89
Crosstalk at 10000 Hz, dB
-86
-86



IMD (swept tones)

Spectrum graph

 
Left
Right
IMD + Noise at 5000 Hz,
0.0175
0.0134
IMD + Noise at 10000 Hz,
0.0175
0.0134
IMD + Noise at 15000 Hz,
0.0175
0.0134

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