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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)

iiWi Reviews

iiWi Reviews

SMSL SU-1 breaks the rules!

Video thumbnail for SMSL SU-1 breaks the rules! by iiWi Reviews

SMSL SU-1 breaks the rules!

iiWi Reviews

iiWi Reviews

Video thumbnail for This Cheap DAC is Tiny and Mighty - SMSL SU1 Review by cheapaudioman

This Cheap DAC is Tiny and Mighty - SMSL SU1 Review

cheapaudioman

cheapaudioman

Video thumbnail for SMSL SU-1 DAC Review, Wunderkind DAC! by Tharbamar

SMSL SU-1 DAC Review, Wunderkind DAC!

Tharbamar

Tharbamar

Video thumbnail for E174: The Amazing S.M.S.L SU-1 DAC by the audio analyst

E174: The Amazing S.M.S.L SU-1 DAC

the audio analyst

the audio analyst

Video thumbnail for The little DAC with a big sound - S.M.S.L SU-1 by Audio Masterclass

The little DAC with a big sound - S.M.S.L SU-1

Audio Masterclass

Audio Masterclass

Video thumbnail for SMSL SU-1 What a Bargain! #utilitariantv #smsl by HiFi Review HUB

SMSL SU-1 What a Bargain! #utilitariantv #smsl

HiFi Review HUB

HiFi Review HUB

Video thumbnail for SMSL SU-1 DAC by Audio Ramblings

SMSL SU-1 DAC

Audio Ramblings

Audio Ramblings

Video thumbnail for Does The SMSL SU-1 Sound Good In a System 200x i'ts Price? S.M.S.L. SU-1 DAC Review. by AV-Obsessed

Does The SMSL SU-1 Sound Good In a System 200x i'ts Price? S.M.S.L. SU-1 DAC Review.

AV-Obsessed

AV-Obsessed

Video thumbnail for Budget DAC Battle! SMSL D1 Vs. SMSL SU-1 Which is Best  for Sound Quality Under  $90 by AV-Obsessed

Budget DAC Battle! SMSL D1 Vs. SMSL SU-1 Which is Best for Sound Quality Under $90

AV-Obsessed

AV-Obsessed

Reviews

Critic Reviews

SMSL SU-1 Review — Headfonics

headfonics.com

The SMSL SU-1 DAC packs a surprising punch for its $80 price tag, offering clean dynamics and versatile input options with MQA support, a rarity in this price range. Its compact design fits snugly on any desktop without demanding attention. However, it's not without flaws; the absence of a remote control and power adapter might frustrate some users, particularly those eyeing it for a TV setup. Sound-wise, it delivers a neutral, slightly clinical profile that may lack warmth for some tastes, but excels in dynamic range and imaging. Overall, the SU-1 presents an enticing option for budget-conscious audiophiles or those looking to upgrade from a basic setup.

positive

SMSL SU-1 DAC Review » MOONSTAR Reviews

moonstarreviews.net

The SMSL SU-1 DAC makes a strong case for itself as a budget-friendly, entry-level option with robust sound capabilities. It brings a balanced and transparent audio profile, supported by the efficient AK4493 DAC chip and XMOS XU-316 USB interface, ensuring high-resolution playback up to 32-Bit/768kHz PCM and DSD512. Its compact design and MQA support add to its appeal, especially for those seeking a versatile digital-to-analog converter. While the device delivers impressive technical performance for its price, it's let down slightly by the lack of a power adaptor and reliance on a single USB port for both data and power. Nonetheless, it's a solid choice for audiophiles on a budget.

positive

SMSL SU-1 - The DAC That Breaks the Rules!

iiwireviews.com

The SMSL SU-1 DAC punches well above its weight class, offering stellar sound quality and build for just $79. With a robust aluminum chassis, it delivers engaging, detailed audio that rivals DACs costing several times more. Its simplicity might be a downside for those seeking extra features like volume controls or auto signal detection, but for budget-conscious audiophiles, the SU-1 is a revelation. It boasts impressive detail retrieval and dynamic range, with well-separated instruments and a lively soundstage. While it lacks some bells and whistles, its sonic performance makes it a standout value in the crowded DAC market.

positive

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