NX7 vs SMSL DS20
The DS20's signal-to-noise is 126 dB against the NX7's 135 dB, its output impedance 0Ω against 0.1Ω, and its height 17 mm against 70 mm. Both share thd (0.000%).
AI-generated product photo — not official manufacturer imagery.
AmplifiersHeadphone AmplifiersDiscontinued
Estimated price (community-sourced)
$110
Around — community and catalog average, updates slowly
About the NX7
The Topping NX7 is a portable headphone amplifier, not a DAC, designed to deliver very low distortion and high output power for both sensitive IEMs and demanding full-size headphones. It uses TOPPING’s NFCA amplifier modules, offers three gain settings, and includes both 3.5mm and 4.4mm headphone outputs. Review and retailer sources describe it as a compact, CNC-machined aluminum unit with a built-in 4000mAh battery and up to 20 hours of runtime on low/medium gain. Multiple sources indicate the NX7 has been discontinued.
Specifications
Analog Output
Analog signal output specifications
- THD
- 0.000%
- SNR
- 135 dB
- Output Impedance
- 0.1Ω
Connectivity
Input and output connections
- Digital Inputs
- 3.5mm analog input
- Analog Outputs
- 3.5mm headphone output, 4.4mm headphone output
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 135 × 70 × 16 mm (W × H × D)
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions