RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
New, the FiiO K11 has recently sold around US$130, so US$90 used is a strong deal. It sits below the US$97 25th-percentile comparable price and well under the US$105 median, making this a genuine bargain if it is complete and working.
The K11 is a particularly capable little desktop DAC/amp: clean, powerful output, three gain levels, USB, optical, and coaxial inputs, plus both 6.35mm single-ended and 4.4mm balanced headphone outputs. Its balanced stage can deliver substantial power for the money, and the RCA line output adds useful system flexibility. Since the listing says the condition is unknown, confirm that the external power supply is included and test the display, volume control, both headphone outputs, and USB input before buying; even with that uncertainty, US$90 leaves attractive headroom.
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.
