The World of Musical Instruments Brochure - Site Top Acetone Catalog 1978 Japanese Page

from the '70s to '90s, Scanned Catalogs of Electric Guitars, Basses, Guitar Amps, Effects - Published in Japan

Acetone Catalog 1978

Guitar Amps G-15, G-35, G-50, Bass Amp B-50, Vocal Amps and Speakers VM-50, VS-50, VM-85, VS-85
General Purpose Amplifiers/Speakers GH-600, GH-1200, GH-600S, GH-1200S, BH-600S, BH-1200S, Guitar Pre-Amp GH-1, Audio Mixer PH-1, PH-2, Bass Pre-Amp BH-1, Speaker Systems PH-1200S, PH-600S
Rhythm Machines FR-6, FR-15, AV-64, FR-60, FR-8L
They are very similar to early Roland's rhythm machines.
Organ X-3W, X-5, Synthesizer PS-1000
BBD delay EH-50, EH-100, Tape delay EC-20, Audio Mixer MP-40, Stereo phaser LH-100, Graphic EQ QH-100, Fuzz masterFM-3, Wah-Fuzz FW-1
by Japan Hammond
Probably, 7809 means Sep. 1978