SMSL AS400 - All-in-One Integrated Amp for $279
18.08.2025 07:59 | ~1 minute read
SMSL has introduced all-in-one integrated amplifier SMSL AS400. This is a universal audio machine for only $279 with powerful DAC, MM phonostage, stereo preamplifier, headphone amplifier and a powerful power amplifier. Housed in a compact case (210×46×254 mm), the amp can be used in a table-top systems.
The Cirrus Logic CS43131 chip is responsible for the sound quality. The built-in USB interface is built on the XMOS XU-316 circuit. The power amplifier based on Infineon MA5332MS modules offers 2 × 85 W at 8 Ohm load or 2 × 165 W at 4 Ohm. There is a volume control based on modern on the NJW1194A (JRC) chip.
The device is equipped with a monochrome display, 6.35 mm and 4.4 mm headphone outputs, and a subwoofer output. Digital inputs include HDMI ARC, USB-C, SPDIF (RCA) and optical Toslink. There is Bluetooth with support for SBC, AAC, aptX HD and LDAC codecs for wireless audio.
Specifications
Model name
AS400
Type
integrated amplifier with DAC and phonostage
Analog inputs (balanced)
N/A
Analog inputs (single-ended)
N/A
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
N/A
Input impedance (single-ended) (Ω)
N/A
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
D/A conversion
N/A
Phono MM/MC current-sensing input impedance (Ω)
N/A
Output power (8Ω) (W)
2 x 85
Output power (4Ω) (W)
2 x 165
Gain (dBu)
N/A
Frequency response low +/- 3dB (Hz)
N/A
Frequency response high +/- 3dB (Hz)
N/A
Signal to Noise Ratio (dB)
N/A
Total Harmonic Distortion + Noise (%)
0.003
Damping factor
N/A
Dimensions (mm)
210 × 46 × 254
Weight (kg)
1.56
Official link
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