An 8-page booklet on the DENON CONCEPT music systems (Vol.II) - an early form of the genre, from before the components split out into their familiar separate boxes. Inside are a regular spread and a four-panel gatefold, where the heart of the system is the hybrid DC-9 at 50W+50W and DC-7 at 35W+35W: a cassette deck, an FM/AM tuner with a digi-ana dial and an amplifier gathered into one slim chassis, with an MC/MM switch and an output for a second deck for dubbing. They make up the D-9E, D-9F, D-7E and D-7F systems together with the quartz DP-32F/DP-31F turntables and the compact SC-11s speakers. The last page holds the full specification table and the CONCEPT options: DM microphones from the DM-122 up to the DM-2600E, Pro moni AH headphones, DENON DX cassettes and stands.