SMSL SU-1 Mini Audio DAC
The S.M.S.L SU-1 represents an exceptional entry point into high-performance digital-to-analog conversion, combining advanced AKM silicon with a compact, bus-powered design. Designed for desktop audiophiles and space-conscious setups, it delivers clean resolution, ultra-low distortion, and an impressive soundstage that elevates your digital music collection.
Advanced AK4493S DAC Architecture
At the heart of the SU-1 is AKM’s high-performance AK4493S digital-to-analog converter chip, paired with a modern third-generation XMOS XU-316 USB processor. This meticulously engineered configuration drastically reduces noise interference and digital jitter. The result is a pure, transparent, and lifelike audio reproduction with refined texture and spatial accuracy.
MQA and High-Resolution Audio Decoding
The SU-1 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. Additionally, full MQA and MQA-CD decoding capabilities allow listeners to stream or play back studio-original master recordings precisely as the artist intended.
Low-Noise Power Design and High-Precision Clock
To ensure absolute signal integrity, the SU-1 incorporates a discrete low-noise power supply system alongside high-precision audio clock oscillators. These specialized components maintain exceptional stability, virtually eliminating phase noise and ensuring pristine clock precision across all digital inputs.
Versatile Triple Digital Inputs
Designed as a flexible digital audio companion, the SU-1 offers a full array of digital inputs to connect seamlessly to various sources:
USB Input: Powered by XMOS XU-316 supporting high-resolution PCM and native DSD.
Optical Input: Ideal for connecting digital audio players, TVs, or game consoles.
Coaxial Input: Provides a stable, high-fidelity interface for standard digital audio transports.
Compact and Durable CNC Aluminum Chassis
The enclosure is precision-milled from high-grade aluminum using advanced CNC machining. This robust, space-saving design not only offers a sleek, modern aesthetic but also provides exceptional structural rigidity and superior shielding against external electromagnetic interference (EMI/RFI).
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
Output: RCA THD+N: 0.00013% (-117dB)
Dynamic Range: 121dB
SNR: 121dB
USB Compatibility: Windows 7/8/8.1/10/11, Mac OS X, Linux
Sampling Rate (USB): PCM up to 32-bit/768kHz, DSD up to DSD512 (DoP256)
Sampling Rate (Optical/Coaxial): PCM up to 24-bit/192kHz, DSD64 (DoP)
Power Supply: USB Powered (< 5W)
Dimensions: 96 x 27 x 78 mm (WxHxD)
Weight: 195g
Q&A
What DAC chip does the SMSL SU-1 use?
It uses the high-performance AK4493S DAC chip from AKM.
Does the SU-1 require an external power supply?
No, it is conveniently powered via its USB interface (bus-powered) with low power consumption.
What is the maximum sampling rate supported via USB?
It supports PCM audio up to 32-bit/768kHz and native DSD up to DSD512.
Does the SU-1 support MQA decoding?
Yes, it features full hardware MQA and MQA-CD decoding capabilities.
What digital inputs are available on the SU-1?
It features USB, Optical, and Coaxial digital inputs along with stereo RCA analog outputs.
