RightMark Audio Analyzer test report

Testing device iPod Touch 4G -> Fostex HP-P1 Gain 1 Filter 2
Sampling mode 16-bit, 44 kHz
Interface  
Testing chain Triple.Fi 10
RMAA Version 6.2.3
   
   
20 Hz - 20 kHz filter ON
Normalize amplitude ON
Level change 2.2 dB / 1.8 dB
Mono mode OFF
Calibration singal, Hz 1000
Polarity correct/correct



Summary

Frequency response (from 40 Hz to 15 kHz), dB
+1.98, -4.47
Poor
Noise level, dB (A)
-93.0
Very good
Dynamic range, dB (A)
92.9
Very good
THD, %
0.085
Average
THD + Noise, dB (A)
-58.9
Poor
IMD + Noise, %
0.025
Good
Stereo crosstalk, dB
-73.7
Good
IMD at 10 kHz, %
0.043
Good
General performance
 
Good



Frequency response

Spectrum graph

From 20 Hz to 20 kHz, dB
-4.47, +1.98
From 40 Hz to 15 kHz, dB
-4.47, +1.98



Noise level

Spectrum graph

 
Left
Right
RMS power, dB
-90.5
-90.5
RMS power (A-weighted), dB
-92.9
-93.0
Peak level, dB FS
-76.9
-76.9
DC offset, %
-0.0
-0.0



Dynamic range

Spectrum graph

 
Left
Right
Dynamic range, dB
+90.4
+90.5
Dynamic range (A-weighted), dB
+92.9
+92.9
DC offset, %
+0.00
-0.00



THD + Noise (at -3 dB FS)

Spectrum graph

 
Left
Right
THD, %
+0.0876
+0.0823
THD + Noise, %
+0.0878
+0.0826
THD + Noise (A-weighted), %
+0.1171
+0.1094



Intermodulation distortion

Spectrum graph

 
Left
Right
IMD + Noise, %
+0.0271
+0.0233
IMD + Noise (A-weighted), %
+0.0121
+0.0112



Stereo crosstalk

Spectrum graph

 
Left
Right
Crosstalk at 100 Hz, dB
-65
-66
Crosstalk at 1000 Hz, dB
-73
-73
Crosstalk at 10000 Hz, dB
-46
-46



IMD (swept tones)

Spectrum graph

 
Left
Right
IMD + Noise at 5000 Hz,
0.0406
0.0446
IMD + Noise at 10000 Hz,
0.0406
0.0446
IMD + Noise at 15000 Hz,
0.0406
0.0446