A100 vs A12
The A12's signal-to-noise is 102 dB against the A100's 103 dB. Both share power @ 8ω (40W), power @ 4ω (80W), and thd (0.005%).
AI-generated product photo — not official manufacturer imagery.
A100
SMSLAmplifiersPower AmplifiersDiscontinued
Estimated price (community-sourced)
$70
Around — community and catalog average, updates slowly
About the A100
The SMSL A100 is a compact Bluetooth power amplifier built around the Infineon MA12070 Class-D chip and designed for desktop or small hi-fi speaker setups. It provides stereo amplification, Bluetooth 5.0 wireless playback, USB audio input, RCA analog input, and dual subwoofer pre-output ports for 2.1/2.2 systems. It is marketed as a Hi-Res certified amplifier with a built-in low-noise switching power supply, gold-plated terminals, and protection circuitry for overheating and overcurrent. Reported retail pricing places it around US$84.91, while some listings show sub-$100 and earlier street pricing near US$80.37.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 40W @ 8Ω
- Power @ 4Ω
- 80W @ 4Ω
- Amplifier Class
- D
- Minimum Impedance
- 4Ω
- Input Sensitivity
- 0.2V RMS
- Input Impedance
- 22Ω
Analog Output
Analog signal output specifications
- THD
- 0.005%
- SNR
- 103 dB
Connectivity
Input and output connections
- Bluetooth
- Yes
- Bluetooth Codecs
- SBC, aptX
- Wi-Fi
- No
- Ethernet
- No
- Digital Inputs
- USB
- Analog Inputs
- RCA
- Analog Outputs
- speaker binding posts, subwoofer pre-output RCA
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 150 × 43 × 165 mm (W × H × D)
- Weight
- 0.6 kg (1 lbs)
Key Specifications
Power: 40W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions