A New Level of Sound

Building on the exceptional design and outstanding performance of the original SU-1, the SMSL SU-1DSP takes things to the next level with a series of significant upgrades. Featuring advanced 32-band PEQ tuning technology, combined with meticulous acoustic tuning and circuit optimization by our engineers, it delivers a more refined, pure, and immersive listening experience. The SU-1DSP seamlessly blends outstanding audio performance with sophisticated industrial design, offering an exceptional experience that delights both the ears and the eyes.

Precision Tuning & Personalized Sound

Powered by a high-performance DSP core, the SU-1DSP supports precise 32-band PEQ adjustments, allowing you to fine-tune the frequency response to match your headphones, speakers, and listening environment. Easily create a sound profile tailored to your personal preferences. With EQ settings memory, your custom tuning is saved and ready to use whenever you listen. Note that DSP adjustments made via the web interface also apply to the Optical and Coaxial inputs.

High-Resolution Decoding & Precision Clock

Equipped with the latest XMOS XU-316 chip and the AKM AK4493S DAC, the SU-1DSP delivers powerful digital processing capabilities, supporting PCM audio up to 32-bit/768kHz and hardware decoding of DSD512. Complemented by dual high-precision, low-phase-noise femtosecond crystal oscillators, it provides an ultra-low jitter clock source. This precision technology enhances imaging definition and soundstage separation, delivering a spacious and immersive listening experience.

Ultra-Low Distortion & Pristine Background

The SU-1DSP features an optimized circuit layout and meticulous tuning. With total harmonic distortion as low as 0.00013%, it delivers remarkably clean and accurate sound reproduction. A pristine background and an excellent signal-to-noise ratio of 121dB reveal subtle instrumental overtones and delicate sonic textures, bringing every detail of your music to life. It faithfully reproduces the intricate details and dynamic range of studio-quality recordings.

High-Performance Power Filtering

The SU-1DSP features a high-performance power filtering system designed to reduce power-supply noise and interference from connected devices. Its optimized power management enables excellent performance through USB power alone, eliminating the need for an additional external power supply. With a simple plug-and-play design, it helps keep your desktop setup clean and clutter-free while delivering high-quality audio with ease.

Premium Build & Flexible Placement

This model features an anodized CNC-machined aluminum alloy chassis, complemented by an artistically crafted front panel. Blending advanced audio engineering with modern industrial aesthetics, its precision machining creates a premium look and feel. Designed to save space without compromising versatility, the ultra-compact SU-1DSP supports both horizontal and vertical placement to suit different setups, fitting effortlessly into your space.

Technical Details

Product Name
SMSL SU-1 DSP Digital to Analog Converter
Inputs
USB, Optical, Coaxial
Outputs
Single-ended line out
Output Level
2.0Vrms
THD+N
0.00013% (-117dB)
Dynamic Range / SNR
121dB
Supported Formats
PCM up to 32-bit/768kHz, DSD512
USB Transmission
Asynchronous
USB Compatibility
Windows / Mac OS / Linux (Driver-free)
Clock
Dual high-precision low-phase-noise femtosecond crystal oscillators
Power Consumption
<5W (USB-powered)
Size
96 × 27 × 78 mm (W×H×D)
Weight:
198g
Note
Does not support MQA.
Inside the Box
  • SMSL SU-1 DSP DAC ×1
  • USB Cable ×1
  • User Manual ×1
  • Certificate ×1

30-Day Return Policy

You may return any non-customized product that is still factory sealed, within 30 days upon receiving it. For items that are damaged, incorrect, or faulty upon delivery, Linsoul will assess the issue and provide a solution accordingly.

1 Year Warranty

Most products within our store come with a 1 year warranty. Please check our terms of service to see more.

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