TOPPING NX5

Suitable headphone impedance: 16–300 ohms
Maximum output power: 292 mW (RL=16 ohms, THD+N=1%); 285 mW (RL=32 ohms, THD+N=1%); 193 mW (RL=64 ohms, THD+N=1%); 95 mW (RL=150 ohms, THD+N=1%); 51 mW (RL=300 ohms, THD+N=1%); 26 mW (RL=600 ohms, THD+N=1%)
Maximum output voltage swing: 11.1 Vpp
Minimum THD+N: 0.00062% (RL = 300 ohms, Gain = H, Pout = 50 mW)
THD+N at 1 kHz: 0.00115% (RL = 32 ohms, Gain = L, Pout = 5 mW); 0.00062% (RL = 300 ohms, Gain = H, Pout = 50 mW)
Frequency response: 10–200 kHz
Input sensitivity: 3.85 Vrms (Gain = L); 1.40 Vrms (Gain = H)
Noise: <3μV (RL = 32 ohms, Gain = L); <6μV (RL = 32 ohms, Gain = H)
Gain at 1 kHz: +0 dB (Gain = L); +8.9 dB (Gain = H)
SNR: 122 dB (RL = 300 ohms, Gain = L); 116 dB (RL = 300 ohms, Gain = H)
Analog input: 3.5 mm
Headphone output: 3.5 mm
Playback time: Approx. 30 hrs
Charging time: < 4 hrs to full charge
Dimensions: Approx. 2.4 x 0.5 x 4.3 in (6 x 1.3 x 10.8 cm)
Net weight: Approx. 4.9 oz (138 g)