Topping NX3S Headphone Amplifier

Topping NX3S Headphone Amplifier is an ideal pairing for your smartphone or portable digital audio player, the Topping NX3S headphone amplifier is designed to drive headphones and IEMs with low distortion and noise. It significantly improves upon the power output of its predecessor, the NX3, with an output of 545 mW at 32 ohms, giving it the ability to drive more demanding full-size cans. The front panel has two gain settings and a selectable bass boost, allowing you to easily toggle between these options.

Specifications:

·         Measured: 10.7cm*6.6cm*1.36cm

·         Weight:157g（Unit only）

·         Colour: Full black/Full Silver

·         Power input: DC5V/1A(PC`s USB 0.5A is OK too)

·         Line In/Out:3.5mm

·         Headphone output:3.5mm

·         Battery capacity:2400mAh

·         Charge time: <4H

·         Playback time:>18H

·         Power LED: Blue light (Light’s red when power is too low)

·         Charge LED: Light’s red(slow)or Light’s orange(fast) when NX4 DSD is charging; Light’s green when the charge is completed.

Parameters:

THD+N@A-weighting
<0.0017% 1kHz Output=273mW(32Ω)
<0.0025% 20-20kHz Output=273mW(32Ω)
<0.0003% 1kHz Output=50mW(300Ω)
<0.0008% 20-20kHz Output=50mW(300Ω)

SNR@A-weighting: >120dB @1kHz
Frequency Response: 20Hz-200kHz (±0.55dB)
Output Level:11.5Vpp@32ΩGain=L,Bass=OFF
15Vpp@300ΩGain=L,Bass=OFF

Noise: <2.5uVrms@Gain=L
<6.5uVrms@Gain=H
Channel Crosstalk:-90dB@1kHz
Channel Balance:0.04dB
Gain: 0dB/8.8dB
Bass:0dB/4.0dB(70Hz)
Output Power: 545mW*2@32ΩTHD+N<1%
100mW*2@300ΩTHD+N<1%
Adapter Impedance:16-300Ω

Package List:

·         NX3s *1

·         USB charge cable*1

·         3.5 mm Cable *1

·         Rubber band *2

·         Velcro *5 pair

·         Rubber Pad *1 

·         User Manual *1