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Description
The SMSL SU-1 is a compact high-resolution DAC designed to upgrade the audio quality of digital sources by converting digital signals into clean, detailed analog output. It supports a wide range of audio formats, including PCM up to 32-bit/768 kHz, DSD512, and MQA/MQA-CD, making it suitable for audiophiles and music lovers alike. Powered through a single USB connection (USB-C), it uses a XMOS XU-316 USB interface and a high-performance AKM AK4493S DAC chip to deliver low distortion and wide dynamic range playback. The CNC-machined aluminum housing is elegant, durable, and compact enough to fit on any desktop or component shelf. Multiple digital inputs — USB, optical, and coaxial — provide versatile connectivity with computers, streamers, CD players, and other digital sources. With its high-resolution decoding capabilities and straightforward design, the SU-1 dramatically improves sound clarity and depth compared to standard built-in DACs.
Specs:
• Product Type: Desktop Digital-to-Analog Converter (DAC)
• MQA & Hi-Res Audio decoding
• DAC Chip: AKM AK4493S high-performance DAC
• USB Interface: XMOS XU-316 asynchronous USB audio
• Supported Inputs: USB (Type-C), Optical (Toslink), Coaxial S/PDIF
• PCM up to 32-bit/768 kHz (USB)
• Native DSD up to DSD512 (USB)
• PCM up to 24-bit/192 kHz (Optical/Coaxial)
• MQA/MQA-CD decoding (up to 384 kHz)
• Output: Stereo RCA analog, ~2.0 Vrms
• THD+N: ~0.00013 % (-117 dB)
• Dynamic Range: ~121 dB
• Signal-to-Noise Ratio: ~121 dB
• USB Compatibility: Windows 7/8/10/11, macOS 10.6+, Linux; Android/iOS
• Supported via USB-C adapters (functionality varies)
• Power Consumption: < 5 W (standby < 0.1 W)
• Housing: CNC machined aluminum alloy, black anodized
• Dimensions: ~96 × 78 × 27 mm
• Weight: ~195 g
• Included: USB-C cable, user manual (varies by vendor)
Videos
iiWi Reviews
SMSL SU-1 breaks the rules!
SMSL SU-1 breaks the rules!
iiWi Reviews
This Cheap DAC is Tiny and Mighty - SMSL SU1 Review
cheapaudioman
SMSL SU-1 DAC Review, Wunderkind DAC!
Tharbamar
E174: The Amazing S.M.S.L SU-1 DAC
the audio analyst
The little DAC with a big sound - S.M.S.L SU-1
Audio Masterclass
SMSL SU-1 What a Bargain! #utilitariantv #smsl
HiFi Review HUB
SMSL SU-1 DAC
Audio Ramblings
Does The SMSL SU-1 Sound Good In a System 200x i'ts Price? S.M.S.L. SU-1 DAC Review.
AV-Obsessed
Budget DAC Battle! SMSL D1 Vs. SMSL SU-1 Which is Best for Sound Quality Under $90
AV-Obsessed
Reviews
Critic Reviews
5.0 out of 5
Based on 0 Reviews and 1 Rating
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
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