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This looks like a fair ask, sitting just under the US$134 median and comfortably inside the usual US$125 to US$148 used range, so it’s priced about right rather than screaming bargain or stretch. At US$129, it’s close enough to market that a buyer should focus less on haggling and more on condition and what’s included.
The K11 R2R has a strong reputation as a compact, musical DAC/amp with a bit more density and texture than the usual clean-measuring budget box, and it’s a nice fit for desktop rigs where you want an easy upgrade path. If the unit is clean, fully functional, and comes with the power supply and original extras, this is a sensible buy for someone wanting that R2R flavor without paying new-retail money.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Fiio, founded in 2007 in Guangzhou, China, emerged as a specialist in portable audio gear, initially crafting components like speakers for brands such as Meizu before launching its own lineup. The name blends "Fi" from hi-fi fidelity with "iO" symbolizing digital one's and zeros, evoking authentic sound and modern convenience, while its Chinese rendering "飞傲" conveys innovative vitality. From modest beginnings, the company expanded into a 15,000-square-meter industrial complex by 2022, solidifying its role as a prolific developer of music-centric electronics.
The brand excels across a broad spectrum of portable and desktop audio categories, with flagship strengths in high-resolution digital audio players (DAPs), USB DACs, portable headphone amplifiers, and in-ear monitors. Its portfolio also encompasses cables, desktop amps, and select speakers, prioritizing versatile, high-performance solutions for on-the-go and home listening without venturing into turntables or large-scale hi-fi systems.
Fiio occupies a commanding mid-tier position in the global audiophile market, renowned for delivering premium sound quality at accessible prices that punch above their weight. Praised by enthusiasts for reliability and value, it appeals to discerning buyers seeking refined portable setups over luxury excess, backed by worldwide distribution and a track record of user-acclaimed innovations.
See all Fiio listings on RADAR.
