NJM4580 Pocket Headphone Amplifier

RightMark Audio Analyzer test

Testing chain: External loopback (line-out - line-in)
Sampling mode: 24-bit, 44 kHz

Summary

Frequency response (from 40 Hz to 15 kHz), dB: +0.02, -0.08 Excellent
Noise level, dB (A): -95.0 Very good
Dynamic range, dB (A): 94.4 Very good
THD, %: 0.0009 Excellent
IMD, %: 0.015 Very good
Stereo crosstalk, dB: -97.6 Excellent

General performance: Very good



Frequency response

Spectrum graph


Frequency range Response
From 20 Hz to 20 kHz, dB -0.27, +0.02
From 40 Hz to 15 kHz, dB -0.08, +0.02


Noise level

Spectrum graph


Parameter Left Right
RMS power, dB: -87.2 -88.2
RMS power (A-weighted), dB: -94.3 -95.0
Peak level, dB FS: -76.2 -76.9
DC offset, %: -0.00 -0.00


Dynamic range

Spectrum graph


Parameter Left Right
Dynamic range, dB: +87.3 +88.3
Dynamic range (A-weighted), dB: +94.4 +95.0
DC offset, %: -0.00 -0.00


THD + Noise (at -3 dB FS)

Spectrum graph


Parameter Left Right
THD, %: 0.001 0.001
THD + Noise, %: 0.008 0.008
THD + Noise (A-weighted), %: 0.004 0.004


Intermodulation distortion

Spectrum graph


Parameter Left Right
IMD + Noise, %: 0.017 0.015
IMD + Noise (A-weighted), %: 0.007 0.007



Stereo crosstalk

Spectrum graph


Parameter L <- R L -> R
Crosstalk at 100 Hz, dB: -97 -97
Crosstalk at 1 kHz, dB: -94 -97
Crosstalk at 10 kHz, dB: -76 -76

This report was generated by RightMark Audio Analyzer 5.0