The Kenwood KDC-C521FM is a CD auto-changer and controller system featuring an integrated FM modulator.

This system supports CD, CD-R, and CD-RW media with a capacity for 10 discs. It includes a 1-bit DAC, a frequency response of 10 Hz to 20 kHz, and a signal-to-noise ratio of 94dB. Functional features include CD-Text, 10-disc programming, magazine random play, and track or disc repeat. The FM modulator operates between 87.7 and 89.7 MHz in 200KHz steps. Technical specifications include a GaAlAs laser diode, an 8 times over sampling digital filter, and a power output of 14.4W.

The package contains the CD changer unit, a remote control requiring two AA batteries, installation screws, and connection wires.

This system is intended for vehicle audio installations where the user needs to manage a 10-disc collection via FM modulation.