$69.99 - $59.49
(as of Oct 15,2020 07:07:05 UTC – Details)
Product Name:Topping NX3s
Size: 10.7 * 6.6 * 1.36 CM (Excluded protruding parts)
Weight: 157G (Excluded accessories)
Chipset: OPA2140 + LME49720
Charge Description: DC5V1A, (also can be charged by computer USB port).
Input interface: 3.5mm headphone interface
Ear output interface: 3.5mm headphone interface
Battery capacity: 2400mAh
Full fill charging time <4H
Standby time >18H
Power indicator: Blue (bright red when low power).
Charge indication: red when charging (slow charging); orange (fast charge), bright green when full of electricity.
Total harmonic distortion @a-weighting
<0.0017%@ 1KHZ Output=273mw (32Ω)
<0.0025%@2020 khz Output=273mW (32Ω)
<0.0003%@1 khz Output=50mW (300Ω)
<0.0008%@20-20 khz Output=50mw (300Ω) Output amplitude:
11.5vpp @32Ω Gain=L, Bass=OFF
15 Vpp@ 300Ω Gain=L, Bass=OFF
<2.5uVrms @ Gain=L
<6.5uVrms @ Gain=H Signal to noise ratio @ A-weighting: >120dB@1kHz
Frequency response: 20Hz – 200kHz (±0.55dB)
Channel crosstalk: -90db @1khz
Channel balance: 0.04dB
Bass boost: 0db/4db (70HZ)
Output power: 545mW x 2 @32Ω THD+N<1% 100mW x 2 @ 30Ω THD+N<1%
Adapted impedance : 16 – 300Q
1 * Topping NX3s Headphone Amplifier
1 * USB charge cable
1 * 3.5mm cable
5 pairs * Velcro
2 * Bandage
1 * User’s manual
1 * Warranty card
1 * Rubber pad
♫ Changable Op Amp: OPA2140 + LME49720. LME49720 has an operational amplifier socket and can be changed to other DIP-8 dual op amp.
♫ Bass and Gain Adjustment：NX3s can satisfy different listening preferences and make up for the lack of earphone bass.0dB / 8.8dB gain regulation.
♫ Rechargable Lithium Battery:NX3s built in 2400mah Lithium ion battery. NX3s can adaptively charge current of 0.5A or 1A. If 1A current charger is used, it can be filled for 4 hours.
♫ Portable and Exquisite Design:Delicate, compact, lightweight, and cute that it can be Carry Conveniently.