Cayin RU9
A watt of power and three voices in a phone-sized box — with a battery that gives out first.
28 sources2 divided topics
2 reviews
Cayin
Tube amplifiers and discrete-converter portables
As an Amazon Associate, we earn from qualifying purchases.
Cayin is the audio brand of Zhuhai Spark Electronic Equipment Co., Ltd., founded in 1993 and long known for vacuum-tube amplifiers and CD players for the home. It moved into personal audio in 2013 with the N-series digital audio players, and has since built a portable line — dongles, portable amplifiers and in-ear monitors — around discrete converter designs rather than off-the-shelf DAC chips, from the R2R ladder of the RU6 to the 128-resistor 1-bit circuits of the N7 and RU7.
- Founded
- 1993
- Based in
- Zhuhai, China
Browse reviews
Prices in USD, recorded when each review was updated.