Dang it.

This product has been discontinued. It has ceased to be. It is no more.

Portability + performance

The TOPPING NX7 is a portable amplifier with the features that count: incredibly low distortion, 20-hour battery life, and loads of output power.

NFCA amplifier

The new NFCA amplifier circuit was specifically designed for portable amplifiers. With a THD+N of 0.00007% and an SNR of 135dB, the NX7 is one of the cleanest portable amps on the market.

Drive full-sized headphones...

The NX7 can output 180mW of high power under a load of 300Ω. With the help of its 3-step gain setting, it can easily power full-sized headphones. High power doesn’t equal high distortion. Even when the output is 200mW, the load distortion is only 0.00008%.

...or IEMs

Using the low gain of the NX7, you can easily drive IEMs. At -13.8dB, the low gain gives you plenty of room to control the volume of extremely sensitive IEMs without damaging them or your hearing.

Anti-mistouch design

The NX7 is designed with corner guards at both ends to protect the entire panel, effectively preventing the volume knob from being mistouched in the pocket and reducing the possibility of breaking the headphone plug.

20-hour battery life

The NX7 can get up to 20 hours of battery life at low and medium gains, and 10 hours at high gain.

Product highlights

NFCA Modules
3-step gain settings
<0.00007% THD+N
135dB SNR
<0.3uVrms of noise
20 hour battery life
<0.1Ω output impedance
1400mW maximum output power

Specs

3.5mm headphone output

THD+N @1kHz (A-wt)

<0.00008% @ 200mW 32Ω
<0.00007% @83mW 300Ω

THD @20-20kHz (90kBW)

<0.0010% @ 200mW 32Ω
<0.0002% @ 83mW 300Ω

SNR @ MAX OUT 1kHz (A-wt): 135dB
SNR @ 50mV OUT 1kHz: 104dB
Dynamic range @1kHz (A-wt): 135dB
Frequency response: 20Hz - 40kHz (±0.1dB)
Output level

Low gain: 7.4Vpp
Medium gain: 11Vpp
High gain: 21Vpp

AP measured noise level@A-wt

Low gain: <0.7uVrms
Medium gain: <0.7uVrms
High gain: <2.0uVrms

Actual noise level

Low gain: <0.3uVrms
Medium gain: <0.3uVrms
High gain: <1.3uVrms

Channel crosstalk @1kHz: -91dB
Input sensitivity

Low gain: 13Vrms
Medium gain: 4Vrms
High gain: 1.5Vrms

Gain

Low gain: -13.8dB
Medium gain: -0.1dB
High gain: 13.9dB

Output impedance: <0.1Ω

4.4mm headphone output

THD+N @1kHz (A-wt)

<0.00008% @ 200mW 32Ω
<0.00007% @83mW 300Ω

THD @20-20kHz (90kBW)

<0.0010% @ 200mW 32Ω
<0.0002% @ 83mW 300Ω

SNR @ MAX OUT 1kHz (A-wt): 135dB
SNR @ 50mV OUT 1kHz: 104dB
Dynamic range @1kHz (A-wt): 135dB
Frequency response: 20Hz - 40kHz (±0.1dB)
Output level

Low gain: 7.4Vpp
Medium gain: 11Vpp
High gain: 21Vpp

AP measured noise level@A-wt

Low gain: <0.7uVrms
Medium gain: <0.7uVrms
High gain: <2.0uVrms

Actual noise level

Low gain: <0.3uVrms
Medium gain: <0.3uVrms
High gain: <1.3uVrms

Channel crosstalk @1kHz: -96dB
Input sensitivity

Low gain: 13Vrms
Medium gain: 4Vrms
High gain: 1.5Vrms

Gain

Low gain: -13.8dB
Medium gain: -0.1dB
High gain: 13.9dB

Output impedance: <0.1Ω

Output power:

1200mW x2 @16Ω THD+N<0.1%
1400mW x2 @32Ω THD+N<0.1%
820mW x2 @64Ω THD+N<0.1%
180mW x2 @300Ω THD+N<0.1%
90mW x2 @600Ω THD+N<0.1%

Adapter impedance: >8Ω

Dimensions: 5.3 x 2.7 x 0.62” (13.5 cm x 7.0 cm x 1.6 cm)

What’s included

TOPPING NX7
3.5 to 3.5 audio cable
USB charging cable
Rubber band
Rubber pad
User manual
Warranty card

Featured reviews

"Their specs and price make this not only one of the best mobile amps but one of the best amp at the price." -Joshua Valour

"The NX7 is an absolute beast." - Passion for Sound

T.H.E. Show x Apos Audio Collection

Price

Collections

TOPPING P50 Linear Power Supply

TOPPING A90 Discrete Headphone Amp

TOPPING D10s DAC (Digital-to-Analog Converter)

TOPPING D50s DAC (Digital-to-Analog Converter)

TOPPING PRE90 + EXT90 Preamp and Input Extender

Apos TOPPING-90 Ensemble

TOPPING D10 Balanced Desktop DAC

TOPPING DX3 Pro+ Bluetooth DAC/Amp

TOPPING L50 Headphone Amp

Audeze LCD-5 Planar Magnetic Headphone

TOPPING PA5 High-Performance Power Amplifier

TOPPING NX7 Portable Headphone Amplifier