Features: ATRAC 4 (Chip: 2652AR). 10 second shock resistant memory. 8x oversampling, 1-bit memory. SSIR-EX AM/FM stereo tuner rotary encoder level control. Detachable front panel, remote supplied. Provides MD & CD changer control. CD Text support when used with CD Text equipped CD changer. D-Bass including Digital D-Bass for MDs. Radio station naming. List function, allows scrolling through radio presets or disc names without interupting current station or disc. Auto-Scroll for MD titles. Adjustable display contrast. Auto-dimmer.

Links: A user's review of the unit. Another, in depth review. Sony's page for the unit.

Specs: MD signal-to-noise ratio: 90dB. Amp: 40W x 4 (peak) 17W x 4 continuous in 4 ohms.

Reviews:

User Manuals: MDX-C7900R, MDX-C7900

Service Manual: MDX-C7900