SMSL AO300 PRO CS43131 All-in-One DAC & Amplifier | HDMI eARC | 165W x 2

All-in-One DAC, Headphone Amplifier, and 165W Class D Power Amplifier with MQA

The SMSL AO300 PRO is a versatile all-in-one audio solution that combines high-resolution DAC decoding, dedicated headphone amplification with 4.4mm balanced and 6.35mm single-ended outputs, and a powerful 165-watt-per-channel Class D speaker amplifier in a single compact chassis. Built around the Cirrus Logic CS43131 decoding chip and XMOS XU-316 USB processor supporting PCM 32-bit/768kHz, DSD256, and full MQA decoding, paired with the Infineon MA5332MS amplifier module achieving THD+N as low as 0.003%, and featuring HDMI eARC with CEC, Bluetooth 5.3, USB, optical, coaxial, and RCA inputs, the AO300 PRO delivers the complete foundation for a modern high-fidelity audio system.

Cirrus Logic CS43131 Premium DAC with XMOS XU-316

The CS43131 is a high-performance 32-bit decoding chip from Cirrus Logic, engineered for detailed and natural sound reproduction with ultra-low power consumption. Paired with the XMOS XU-316 USB processor, the AO300 PRO supports PCM up to 32-bit/768kHz, native DSD256, and full MQA decoding for bit-perfect playback of high-resolution audio files and lossless streaming content across all major formats.

Full MQA Decoding for Studio-Quality Sound

The AO300 PRO supports full MQA (Master Quality Authenticated) decoding through the USB input, allowing listeners to experience master-quality audio with the finest detail and fidelity as the artist intended in the studio. MQA-CD decoding is also supported via the optical and coaxial inputs.

Infineon MA5332MS Class D Amplifier with 165W x 2 Output

The Infineon MA5332MS Class D amplifier module provides robust and efficient power delivery, capable of driving mid-to-high-end bookshelf and floorstanding speakers with authority. Achieving THD+N as low as 0.003% with an SNR of 107dB, the AO300 PRO delivers exceptionally clean, transparent amplification with wide dynamic range and minimal coloration. A dedicated subwoofer output supports 2.1-channel configurations for enhanced low-frequency performance.

HDMI eARC with CEC for Television and Gaming Audio

An integrated HDMI eARC (Enhanced Audio Return Channel) input extracts high-resolution digital audio directly from compatible televisions and gaming consoles, with CEC support for synchronized TV power and volume control. The HDMI input supports PCM up to 24-bit/192kHz for immersive cinematic sound.

Dedicated Headphone Amplifier with 4.4mm Balanced and 6.35mm Outputs

Beyond speaker amplification, the AO300 PRO features a high-quality dedicated headphone output stage equipped with both 4.4mm balanced and 6.35mm single-ended headphone jacks, accommodating a wide range of headphones and in-ear monitors for detailed, private listening sessions with excellent channel separation.

Bluetooth 5.3 and Comprehensive Connectivity

Bluetooth 5.3 with LDAC, aptX HD, AAC, and SBC codecs provides high-resolution wireless streaming from smartphones and tablets. USB-C, optical, coaxial, HDMI eARC, and RCA inputs offer seamless wired compatibility with computers, televisions, CD players, turntables, and gaming consoles. Gold-plated connectors and a full-function remote control ensure reliable signal transfer and convenient operation.

Sound Customization with EQ Modes and Digital Filters

Eight built-in EQ presets (Direct, Tone, SDB, Bass, Super Bass, Rock, Soft, Clear) and five digital filter modes (Fast Low-latency, Fast Phase-compensated, Slow Low-latency, Slow Phase-compensated, NOS) allow precise tailoring of the sound signature to personal preference and listening environment. Independent bass and treble adjustment ranges from -9dB to +9dB.

Specifications

• DAC Chip: Cirrus Logic CS43131
• USB Processor: XMOS XU-316
• Amplifier Module: Infineon MA5332MS Class D
• Output Power: 165W x 2 @ 4 Ohm / 85W x 2 @ 8 Ohm
• THD+N: 0.003%
• SNR: 107dB
• Channel Separation: 98dB
• PCM Support (USB): Up to 32-bit/768kHz
• DSD Support (USB): Native DSD256 (up to 11.2896MHz)
• PCM (Optical/Coaxial/HDMI eARC): Up to 24-bit/192kHz
• MQA: Full Decoder (USB) / MQA-CD (Optical/Coaxial)
• Bluetooth: 5.3 (LDAC, aptX HD, AAC, SBC)
• Headphone Outputs: 4.4mm Balanced / 6.35mm Single-Ended
• Inputs: HDMI eARC / USB-C / Bluetooth / Optical / Coaxial / RCA
• Outputs: Speaker Binding Posts / Subwoofer Out / Headphone
• EQ Modes: 8 Presets (Direct, Tone, SDB, Bass, Super Bass, Rock, Soft, Clear)
• Digital Filters: 5 Modes (Fast/Slow Low-latency, Fast/Slow Phase-compensated, NOS)
• Dimensions: 219 x 42 x 185 mm (W x H x D)
• Weight: Approx. 1.5 kg
• Remote Control: Full-Function Infrared Included

What's Included

• SMSL AO300 PRO DAC and Amplifier
• Remote Control
• Power Cable
• USB Cable
• HDMI Cable
• Bluetooth Antenna
• User Manual