NX1A    Portable headphone amplifier
  A hot amplifier on Head-Fi forum
Aluminum shielding body

NX1A's aluminum body was built by a highly automated CNC machining center.

Matte surface

We use same surface blasting process as MACBOOK air to get a fine matte effect.
All characters was engraved on the surface by laser.

150h playback time, better than better

NX1A keep same circuit and component of NX1 to keep a same sound. But after modifing other part to save power, NX1A’s playback time up to 150h, that’s 50% improvment of NX1.
It takes less than 3 hour to fully charge the battery.
Even 5 minutes charge could provide 10 hour playback.

Fully charge<3h
5min charge
0.5A charge current
10h playback
  Simple is best  

We put “simple is best” on NX1A, from circuit, function and operate, you can see a best performance of simple everywhere.

  Gain setting  

NX1A provide gain setting of high and low.
Low gain use for strong input signal, you can get better noise performance.
High gain use for weak input signal to get suitable gain.

  High-quality components  

NX1A use high quality components to get better performance. WIMA capacitance, EPCOS capacitance and ALPS potentiometer.
We also gilded the headphone jack, the switch and the PCB.

Micro USB

You can get a charege cable everywhere.

NX1A has CE, ROHS and FCC certification.
Analog input 1 x 3.5mm
Headphone output 1 x 3.5mm
Playback time Approx 150 hours
Net weight Approx 93g (unit only)
Dimensions Approx 9CM x 5.8CM x 1.35CM
Includes 1 x NX1A
1 x Audio cable
1 x USB charge cable
2 x Silicone band
5 x Velcro
1 x User's manual
Suitable Headphone Impedance 16-300Ω
Maximum output power 100mW (RL=32Ω, THD+N=1%)
Maximum output voltage swing 8.2Vpp
Minimum THD+N 0.001% (RL=150Ω, Pout=10mW)
THD+N(@1kHz) 0.009% (RL=150Ω, Pout=10mW)
Frequency response 20-20kHz±0.2dB
Input sensitivity 1.55Vrms (GAIN=L); 0.52Vrms (GAIN=H)
Noise <10μV
Gain(@1kHz) +6dB (GAIN=L); +15dB (GAIN=H)
SNR 105dB
  User's manual download