AmplifiersHeadphone AmplifiersDiscontinued
Estimated price (community-sourced)
$25
Around — community and catalog average, updates slowly
About the C9 Power Module
The Cayin Audio C9 Power Module is the removable battery and charging assembly designed for the Cayin C9 portable headphone amplifier. It holds four user-replaceable 18650 lithium-ion cells and can be detached from the amplifier, allowing a charged module or fresh set of batteries to be swapped in. The module also charges the installed cells through USB-C. Available information describes it as a C9 accessory;
Specifications
Connectivity
Input and output connections
- Digital Inputs
- USB Type-C
Never published
- Analog Output (output level and impedance at the line outputs) — the maker never published this. Checked 15 sources on 10 Nov 2026
- Headphone Output (power, impedance and gain at the headphone jack) — the maker never published this. Checked 15 sources on 28 Oct 2026
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions