PA400 vs PA-X
The PA-X matches the PA400 on power @ 8ω (200W), power @ 4ω (250W), signal-to-noise (115 dB), and thd (0.003%).
AI-generated product photo — not official manufacturer imagery.
AmplifiersPower Amplifiers
Estimated price (community-sourced)
$472
Around — community and catalog average, updates slowly
About the PA400
The SMSL PA400 is a compact high-end GaN power amplifier built around Infineon gallium nitride transistors and a Class D design. It supports stereo balanced operation or XLR mono bridge mode, uses a TI PGA2311 volume controller, and is aimed at driving passive speakers with low distortion and high output power.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 200W @ 8Ω
- Power @ 4Ω
- 250W @ 4Ω
- Amplifier Class
- D
- Minimum Impedance
- 4Ω
- Input Sensitivity
- 1.0V RMS
- Input Impedance
- 22000Ω
Analog Output
Analog signal output specifications
- THD
- 0.003%
- SNR
- 115 dB
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- RCA, XLR
- Analog Outputs
- speaker binding posts
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 254 × 48 × 242 mm (W × H × D)
- Weight
- 2.58 kg (6 lbs)
- Available Colors
- silver
Key Specifications
Power: 200W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions