Color:Black Topping NX3s Portable Headphone Amplifier Product Name:Topping NX3s Color: Black,Silver Size: 10.7 * 6.6 * 1.36 CM (Excluded protruding parts) Weight: 157G (Excluded accessories) Performance parameters 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. Product parameters 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 Bottom noise: <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 Gain: 0db/8.8dB 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 Package included: 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
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