A70 Pro vs SMSL SP400
The SP400's signal-to-noise is 133 dB against the A70 Pro's 147 dB, its output impedance 0Ω against 0.1Ω, and its input impedance 47Ω against 20000Ω. Both share thd (0.000%).
Both turn up in the same documented systems.
AI-generated product photo — not official manufacturer imagery.
AmplifiersHeadphone AmplifiersPre-Amplifiers
Estimated price (community-sourced)
$349 - $461.50
Around — community and catalog average, updates slowly
About the A70 Pro
The Topping A70 Pro is a fully balanced desktop headphone amplifier and preamplifier aimed at high-performance stereo and headphone systems. It features Topping’s T'ang-ku-la amp modules, an R2R relay/resistor volume control, Aurora UI with a 2-inch color display, low-noise balanced and single-ended stages, and 12V trigger support. It is known for extremely low noise, very high output power, and flexible use as either a headphone amp or line-level preamp.
Specifications
Analog Output
Analog signal output specifications
- THD
- 0.000%
- SNR
- 147 dB
- Output Voltage
- 0.0V RMS
- Output Impedance
- 0.1Ω
- Max Output Voltage
- 56.0V RMS
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- balanced XLR, unbalanced RCA
- Analog Outputs
- 4-pin XLR headphone out, 4.4 mm balanced headphone out, 6.35 mm headphone out, balanced XLR preamp out, unbalanced RCA preamp out
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 222 × 48 × 176 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