RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
This is a buyer’s market for this category at the moment: at US$355, this sits well below the US$846 median and even under the US$269–US$1,321 middle spread, which makes it a strong-value ask for a recent Cayin portable tube DAC/amp. For a piece like this, that’s the kind of pricing that should get attention rather than second-guessing.
The appeal is the RU9’s hybrid tube flavor in a genuinely portable format, so you’re buying a compact way to add some warmth and texture without going full desktop. If it’s clean, includes the right cables, and the battery still behaves normally, this looks like an easy buy for anyone wanting a premium-sounding portable chain. At this price, I’d mainly verify accessories and battery health, not hunt for faults.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Cayin Audio traces its roots to 1993, when Zhuhai Spark Electronic Equipment Co., Ltd. was established in Zhuhai, China. From the outset, the company focused on crafting audiophile-grade components under the Cayin brand, blending Eastern precision with a passion for musical fidelity. Over three decades, it has evolved from traditional hi-fi roots into a multifaceted player, emphasizing equipment that delivers exceptional sound across diverse price points to democratize high-quality audio.
The brand excels in a broad spectrum of categories, with its vacuum tube amplifiers standing out as flagship offerings renowned for warmth and detail. Its portfolio extends to CD players, speakers, digital audio players (DAPs), desktop systems like the i-series, portable amplifiers, in-ear monitors, and even innovative DACs such as the compact RU2 dongle. Since venturing into personal audio in 2013, Cayin has prioritized portable and lifestyle solutions, including the N-series DAPs, all while maintaining rigorous build quality with premium materials like milled aluminum and walnut wood.
Cayin holds a solid mid-to-high-end position in the global hi-fi market, prized by discerning buyers for its value-driven performance and cultural depth. It bridges accessible excellence with boutique appeal, earning acclaim for tube amps that rival pricier rivals, without veering into ultra-esoteric territory. This Chinese powerhouse continues to carve a lasting niche among knowledgeable enthusiasts seeking reliable, soulful sound.
See all Cayin Audio listings on RADAR.
audio-markt.de
New
DE
Reverb
eBay UK
GB
eBay US
eBay UK
audio-markt.de
New
