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SMSL SU-1 Compact HiFi DAC features AK4493S chip, MQA/MQA-CD support, 32-bit/768kHz PCM and DSD512 formats with ultra-low distortion. Perfect for desktop audio systems.FREE GIFT - Toslink Optical Audio Cable 3M1 Year Manufacturer WarrantyAKM AK4493S DAC CHIP - Ultra-low distortion under 0.00013% for pristine audio reproductionMQA AND MQA-CD DECODING - Studio-quality playback revealing original recording detailsHI-RES AUDIO SUPPORT - PCM up to 32-bit/768kHz and native DSD512 for ultimate fidelityXMOS XU-316 CHIP - Stable USB connectivity across Windows, Mac, Linux, iOS and AndroidCOMPACT CNC ALUMINIUM DESIGN - Desktop-friendly size with USB bus-powered convenienceVERSATILE CONNECTIVITY - RCA output with coaxial and optical digital inputs includedExound® is committed to improving product quality. Free Gifts' appearance may change without prior notice due to process and design upgrades. Please refer to the actual product received as the final reference.
At US$98, this used SMSL SU-1 is ambitious for the current market, sitting well above the median of US$70 and exceeding the 75th percentile of US$83 from our internal database of eight recent listings. While the new retail price hovers around US$80, the asking price here is roughly US$18 over the 75th percentile, making it a tough sell unless the unit is pristine or includes rare accessories.
The SU-1 remains a highly regarded budget DAC for its clean, uncolored sound and neutral pairing with various amps, thanks to the AK4493S chip and MQA unfolding capability. It delivers impressive performance for its size, often beating cheaper alternatives in clarity. However, given the price is above median, you should verify the condition is excellent and confirm if the original power cable or box is included; otherwise, waiting for a listing closer to US$64–US$70 is the smarter play.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
SMSL, founded in 2009 as Foshan ShuangMuSanLin Technology Co., Ltd. in Shenzhen, China, emerged from the country's burgeoning tech hub to specialize in digital audio innovation. The company quickly expanded with a Hong Kong branch, VMV Technology, in 2013, targeting higher-end exports and establishing a global footprint across more than 30 countries. Its early focus on domestic sales laid a solid foundation, evolving into a recognized name in affordable hi-fi.
The brand excels in digital-to-analog converters (DACs), headphone amplifiers, and power amplifiers, delivering high-performance components like the iconic Sanskrit series—featuring DACs, preamp-capable headphone amps, and linear power supplies. SMSL emphasizes in-house R&D for stylish, well-built devices incorporating premium technologies such as THX AAA-888 amplification, prioritizing audio fidelity without unnecessary frills.
Positioned as a mid-tier leader in the value-driven hi-fi market, SMSL earns praise for punching above its weight, offering audiophile-grade sound at accessible prices that rival pricier competitors. Popular among discerning buyers seeking reliability and transparency, it stands out for meticulous component selection, though some note occasional quality concerns with budget imports. For the knowledgeable enthusiast, SMSL represents smart, modern Chinese engineering at its finest.
See all SMSL listings on RADAR.
