SMSL SU-9 Audio System User Manual

Q: What is the warranty period for the SMSL SU-9?

The product is covered by a free warranty for one year under normal usage conditions.

Q: Which interfaces support MQA decoding on the SU-9?

Only the USB interface supports MQA decoding; other interfaces do not support it.

Q: How do I pair the SU-9 with a Bluetooth device?

Switch the input source to Bluetooth, enable Bluetooth on your phone, search for "SMSL SU-9", and click to pair.

Q: Where can I download firmware and drivers?

Firmware and drivers can be downloaded from the official SMSL website.

This manual provides installation, operation, and maintenance instructions for the SMSL SU-9 high-resolution audio system, covering features like MQA…

SMSL SU-9 Audio System User Manual - cover page

Brand: S.M.S.L
Category: Other Electronics
Document type: User Manual
Language: Chinese
Pages: 22
File format: PDF
File size: 11.2 MB
Published: 17 October, 2026
Updated: 17 October, 2026
Model: SU-9
MD5 checksum: B1CDCEEAEA7CE93382F936414263F2B5
PDF: SMSL SU-9 Audio System User Manual PDF

About this manual

The SMSL SU-9 is a high-resolution audio system featuring MQA decoding, a smart temperature compensation system, and high-end ESS ES9038PRO D/A chips. It supports multiple input methods including USB, Optical, Coaxial, and Bluetooth with various high-quality codecs like LDAC and aptX-HD. This manual is written in Chinese.

What's inside

Safety Precautions
Warranty Terms
Product Features
Technical Specifications
Remote Control Usage
Component Introduction
Operation Guide
Menu Tree
MQA Playback
Firmware Download

Specifications

THD+N	0.00009% (-121dB)
Dynamic range (XLR)	130dB
Dynamic range (RCA)	123dB
SNR	130dB
Output impedance (XLR)	207Ω
Output impedance (RCA)	142Ω
USB Compatibility	Windows 7 / 8 / 8.1 / 10, Mac OSX, Linux
Power Consumption	5W
Standby power	<0.5W
Dimensions	187.5X154X40mm (WxHxD)
Weight	0.79kg

Frequently asked questions

What is the warranty period for the SMSL SU-9?