SMSL AO300 Class D Amplifier MA5332MS Headphone Amplifier DAC CS43131 2x165W 4Ω 32bit 768kHz DSD256 MQA Silver

High-end components for high performance

SMSL AO300 Class D Amplifier MA5332MS Headphone Amplifier DAC CS43131 2x165W @ 4Ω 32bit 768kHz DSD256 MAQ-CD Silver

MA5332MS amplification chip

The MA5332MS is a Class D stereo amplifier chip. This MCM (multi-chip module) solution integrates 4 MOSFET transistors. It enables the A0300 to deliver power up to 2x165W under 4Ω and 2x85W under 8Ω.

CS43131 DAC chip

The Cirrus Logic CS43131 chip is a DAC chip integrating a low-noise, high-fidelity headphone amplifier. In fact, this chip is capable of driving audiophile headphones with an impedance of 600Ω and an output power of 5mW per channel. With a 32Ω load, it delivers 32mW per channel.

XMOS XU6316 USB interface

The AO300's USB-C input is complemented by XMOS's flagship XU316 interface. This enables it to support high-resolution audio streams up to PCM 32bit 768kHz and DSD up to DSD256.

HDMI ARC input port and subwoofer output

SMSL has integrated an HDMI ARC input port, so you can enjoy high-quality sound reproduction with your TV as the audio source. To this is added a subwoofer output to transform your Hi-Fi installation into a 2.1-channel system and obtain an immersive rendering with active subwoofer. SMSL's AO300 can therefore be used as a small home-cinema amplifier.

MQA Support

The AO300's optical Toslink and coaxial inputs support MQA and MQA-CD (Master Quality Authenticated) streams, thanks to an MQA decoder for the richest, most detailed sound reproduction possible. This amplifier/DAC therefore offers the possibility of enjoying professional audio quality, with retransmission as close as possible to the original sound recorded and processed in the studio.

Available filters and EQs

SMSL has gone one step further with the AO300, integrating 8 EQ and 5 filter options to adjust tone and sound quality to your listening preferences.

SMSL AO300 EQs:

Direct
Superbass
Tone
Rock
SDB
Soft
Bass
Clear

SMSL AO300 filters:

Latency filter: "Fast and Low"
Compensated filter: "Fast and phase"
Latency filter: "Slow and low"
Compensated filter: "Slow and phase"
Nonoversampling filter

Specifications
Product type	Amplifier DAC Headphone amplifier
DAC chip	CS43131
Amplifier chip	MA5332MS
USB interface	XMOS XU316
Inputs	1* Stereo RCA line input 1* Coaxial SPDIF 1* Optical Toslink 1* USB-C 1* HDMI ARC Bluetooth
Outputs	Speaker terminals 1* Subwoofer output 1* Jack 4.4mm balanced headphone output 1* Jack 6.35mm headphone output
Output power	2x165W @ 4Ω 2x85W @ 8Ω
THD+N	0.003%
SNR	107dB
Channel separation	98dB
Input sensitivity / Input impedance	280mV / 22kΩ
USB transmission type	USB 2.0 asynchronous
USB compatibility	Windows 7/8/9/10/11 Mac OSX Linux
Supported sample rates	USB : PCM 32bit 768kHz, DSD256 and MQA Optical and Coaxial : PCM 24bit 192kHz, DSD64 (DoP) and MQA-CD

Specifications

Product type

Amplifier
DAC
Headphone amplifier

DAC chip

CS43131

Amplifier chip

MA5332MS

USB interface

XMOS XU316

Inputs

1* Stereo RCA line input
1* Coaxial SPDIF
1* Optical Toslink
1* USB-C
1* HDMI ARC

Bluetooth

Outputs

Speaker terminals
1* Subwoofer output
1* Jack 4.4mm balanced headphone output
1* Jack 6.35mm headphone output

Output power

2x165W @ 4Ω
2x85W @ 8Ω

THD+N

0.003%

SNR

107dB

Channel separation

98dB

Input sensitivity / Input impedance

280mV / 22kΩ

USB transmission type

USB 2.0 asynchronous

USB compatibility

Windows 7/8/9/10/11
Mac OSX
Linux

Supported sample rates

USB : PCM 32bit 768kHz, DSD256 and MQA
Optical and Coaxial : PCM 24bit 192kHz, DSD64 (DoP) and MQA-CD

General
Power consumption	40W (with normal volume)
Dimensions	21942185mm
Weight	1.52kg
Color	Silver
Package	1* SMSL AO300 1* Remote control 1* Power cable 1* USB-A to USB-C cable 1* HDMI cable 1* Bluetooth antenna

General

Power consumption

40W (with normal volume)

Dimensions

219*42*185mm

Weight

1.52kg

Color

Silver

Package

1* SMSL AO300
1* Remote control
1* Power cable
1* USB-A to USB-C cable
1* HDMI cable
1* Bluetooth antenna

Input	HDMI ARC
Input	USB
Input	SPDIF
Input	Bluetooth
Input	RCA
Input	Optical
Output	Subwoofer
Output	Speaker terminal
DAC / ADC Chip	CS43131
Max sampling rate	DSD512
Max sampling rate	MQA
Max sampling rate	768kHz
Color	Silver
Channel	2.1
Class	Class D / T
Amplifier chip	Infineon MA5332M
Power (W)	165.0
Networking	No
Remote Control	Yes

Daniel V.
It is an overall excellent device (SMSL AO300), well thought out with a wide range of connection options to the source and end components of the apparatus.
In terms of sound, I am satisfied with its clean, natural sound on both analog and digital connections. Speakers used are B&W CDM-1 + Dali SW-8; on the headphone output there is an excellent combination with 1MORE Triple Driver Over-Ear headphones (slight modification - removal of 2/3 layers of foam above the drivers).
I wanted (ordered) a black version, a version with a silver front panel arrived. . . :-)

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