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About this gear
The RU9 is Cayin's flagship USB-C dongle DAC/amp, bringing the brand's tube-inspired house sound into a pocketable transportable format for use with phones and laptops. It targets listeners who want a portable upgrade path with a smoother, more organic tonal character than typical dongle DACs, without carrying a separate amplifier.
About Cayin
Chinese audio manufacturer founded in 1993 in Zhuhai, originally building vacuum tube amplifiers. Cayin's N-series digital audio players are celebrated for their warm, tube-like musicality — the flagship models include actual miniature tube output stages. Known for lush, euphonic sound signatures th...
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