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Are you getting a clean, complete unit, or are you paying up for a bridge that’s only “fine”? At US$350, this lands around the middle of the used range for the SU-1, which shows up used in Europe around the equivalent of US$200 and has also been seen closer to US$400 new-ish retail territory, so this asking price reads fair to slightly firm, not a bargain. I’d only push back if it’s missing the power supply or other essentials, because the price doesn’t leave a ton of room for unknowns.
The SU-1 is well regarded because it’s a capable USB-to-digital bridge that can cleanly feed S/PDIF, AES/EBU, and I2S rigs, and many owners have treated it as a meaningful upgrade in computer-audio setups. If this one is original-owner, lightly used, and includes the right PSU and cables, that adds real value; if it’s a bare unit with no accessories, then US$350 becomes less attractive even if the box itself is solid.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Guangzhou Singxer Electronic Co., Ltd., founded in 2011 in the Panyu District of Guangzhou, China, emerged from a team of seasoned audio engineers focused on addressing shortcomings in digital audio playback. Initially specializing in OEM and ODM projects, the company leveraged its expertise in XMOS processors—pioneering the xCORE-200 series—to build a foundation in high-performance audio solutions. Without notable individual founders highlighted in public records, Singxer's heritage lies in its engineering-driven ethos, quietly supporting third-party brands for over a decade before expanding its own branded lineup.
Singxer concentrates on digital audio interfaces and headphone amplification, producing standout products like USB digital bridges (e.g., the SU-6 DDC), DACs, and fully balanced headphone amplifiers such as the SA-1. Their portfolio emphasizes precision components, including fully discrete differential designs with balanced/single-ended options, prioritizing low noise floors and exceptional measurements like THD+N below -120dB.
Positioned as a mid-tier contender in the competitive Chinese hi-fi market—alongside brands like Topping and SMSL—Singxer earns praise for delivering high-end performance at accessible prices, often under $600. While less mainstream outside Head-Fi circles, its products are lauded for reliability, robust engineering, and value, appealing to discerning headphone enthusiasts seeking measurable excellence without luxury premiums.
See all Singxer listings on RADAR.
