No date of issue, perhaps 1982.
Mixers MX-1600, MX-1250DX, MX-850DX
Mixers MX-1250, MX-850, MX-800E, MX-650, MX-600E
PA Speakers PS-650M, PS-1100M, PS-1200M, PS-1100S, PS-1200S, PS-2000H-W, Foldback speaker FB-650, FB-1000, Power amp MA-100, MA-160, MA-200
Junction Boxes and Multi Cables
Vocal Amps VC-230E, VC-220, VC-120, Microphone TM-718, TM-716, TM-713
Guitar and Bass amps PG-125E, PG-95E, PG-125, PG-95, MG-30, MG-15, A-500B, A-300B, 8-track player CX-82, Graphic Equalizer GR-1000, Analog Delay/Chorus SR-450E, Echo and Reverb SR-900
Programmable 4-Voice Polyphonic Synthesizer SX-400, Monophonic synthesizers S-110F, S-60F
Preset synthesizers S-60P, S-100P, Electronic PIano TE-77
Ensemble Keyboard EX-300, Keyboards Specifications
5703 means Mar. 1982, perhaps.