Casio MT65

Key Features and Specifications Keyboard: 49 standard-sized keys (roughly 4 octaves). Polyphony: 8-note polyphony (drops to 4 notes when auto-accompaniment is active). Preset Tones: 20 distinct sounds, including classic 80s organs, pianos, brass, and strings. Built-in Effects: Vibrato and Modulation effects for all preset voices. Sustain and Reverb-like delay to alter amp envelopes. Rhythm & Accompaniment: 12 analog drum/rhythm patterns (with realistic, early Roland-style sounds). Comprehensive auto-accompaniment section (with controls for Bass, Chords, and Arpeggios). Separate, independent volume controls for the accompaniment and rhythm sections. Synchro start, fill-in, and manual bass (monophonic bass for the left hand) capabilities. Connectivity & Power: Built-in back-mounted speaker for portable play. Headphone jack and mono RCA line out. Powered by 5 "D" cell batteries or a 7.5-volt negative-center power supply. Auto-power off function (shuts down after 6 minutes of inactivity to save battery).