S.M.S.L SU-9 PRO High-Resolution Audio DAC
The S.M.S.L SU-9 PRO represents a high-performance standard in modern digital-to-analog conversion, combining state-of-the-art flagship silicon with uncompromising audio engineering. Designed for discerning audiophiles and high-end desktop setups, it delivers master-grade resolution, ultra-low distortion, and an expansive soundstage that brings every nuance of your music to life.
Flagship ES9039MSPRO DAC Architecture
At the heart of the SU-9 PRO is ESS Technology’s premier flagship ES9039MSPRO digital-to-analog conversion chip, utilizing all 8 channels driven by the third-generation XMOS XU-316 processor and multiple high-performance OPA1612A operational amplifiers. This advanced design drastically reduces noise interference and digital jitter to deliver an exceptionally pure, transparent, and lifelike audio reproduction with pinpoint imaging.
Advanced CK-03 Clock Processing Circuit
To ensure absolute signal integrity and minimize timing errors, the SU-9 PRO incorporates SMSL's newly self-developed CK-03 clock processing circuit. This specialized system works in tandem with low-noise power regulation to virtually eliminate phase noise, ensuring master-clock precision and exceptional stability across digital streams.
MQA and High-Resolution Audio Decoding
The SU-9 PRO provides comprehensive hardware support for the industry's most demanding formats. It natively decodes PCM audio up to 32-bit/768kHz and Direct Stream Digital up to DSD512 via USB and S/PDIF inputs. Additionally, full MQA and MQA-CD decoding capabilities allow listeners to stream or play back studio-original master recordings precisely as the artist intended.
High-Performance Qualcomm Bluetooth Connectivity
Equipped with a high-end Qualcomm Bluetooth chipset, the SU-9 PRO supports high-definition wireless streaming protocols including LDAC (24-bit/96kHz), aptX HD, aptX, AAC, and SBC. This ensures that users can enjoy seamless, high-resolution wireless audio from smartphones, tablets, or laptops without sacrificing sonic fidelity.
Low-Noise Shielded Power Supply Design
To maximize audio performance, the unit features a built-in shielded, low-noise power processing system coupled with specially designed discrete component linear regulators and multiple low-noise voltage regulators. This robust power architecture provides clean, stable, and efficient power to both digital and analog circuits while maintaining lower power consumption.
Premium Tempered Glass Display Design
The chassis is engineered with a sleek, modern aesthetic and features a high-transmittance tempered glass display panel. This design offers higher light transmittance, enhanced visual clarity, and a longer service life, making it a sophisticated addition to any high-end desktop or home audio rack.
Comprehensive Digital Connectivity
Designed as a versatile command center for high-end digital audio sources, the SU-9 PRO offers a full array of digital inputs and professional analog outputs:
USB Input: Powered by XMOS XU-316 supporting high-resolution PCM and native DSD.
Optical & Coaxial Inputs: Ideal for connecting digital transports, televisions, or game consoles with full DSD support (DoP64).
Analog Outputs: Features balanced XLR and single-ended RCA outputs for effortless system integration.
About SMSL
Foshan ShuangMuSanLin Electronics Co., Ltd. (SMSL) is an established manufacturer in high-fidelity desktop audio. Specializing in digital-to-analog converters, balanced headphone amplifiers, and power amps, SMSL has built a global reputation for combining rigorous bench performance, clean industrial design, and practical feature sets across various price tiers.
Technical Specifications
Input: USB / Optical / Coaxial / Bluetooth
Output: XLR / RCA
THD+N: 0.00009% (-120dB)
USB Compatibility: Windows 7/8/8.1/10/11, Mac OS X, Linux
Bluetooth Support: LDAC (24-bit/96kHz), aptX HD, aptX, SBC, AAC
Sampling Rate (USB): PCM up to 32-bit/768kHz, DSD up to DSD512
Sampling Rate (Optical/Coaxial): PCM up to 24-bit/192kHz, DSD64 (DoP)
Clock Processing: CK-03 circuit
Display: Tempered glass panel
Q&A
What DAC chip does the SMSL SU-9 PRO use?
It uses the flagship ESS ES9039MSPRO DAC chip utilizing all 8 channels.
What clock system is featured in the SU-9 PRO?
It features SMSL's self-developed CK-03 clock processing circuit to significantly reduce jitter.
Does the SU-9 PRO support Bluetooth streaming?
Yes, it features a high-end Qualcomm Bluetooth chip supporting LDAC, aptX HD, and more.
What is the maximum sampling rate supported via USB?
PCM up to 32-bit/768kHz and native DSD up to DSD512.
Does the unit feature balanced outputs?
Yes, it comes with high-quality balanced XLR and single-ended RCA analog outputs.
