Yamaha is a well-known manufacturer of musical instruments

This digital organ is part of Yamaha’s Electone series, which are known for their advanced features and high-quality sound. The AR100 was designed to offer a wide range of realistic organ and keyboard sounds, as well as various accompaniment styles and advanced performance features and Astoundingly True-to-life Sounds

The new Advanced Wave Memory (AWM) tone generation of technology gives you 205 exceptionally realistic and natural-sounding Voices. The AR-100 also has special Voice sets for XG, GM (General MIDI) and DOC (Disk Orchestra) song data.

To make sure you’re never at a loss for notes, the AR-100 has an amazingly large 128-note polyphonic capacity. What’s more, the touch response built into the keyboards provides full expressive control over the Voices.
Variety of Organ Sounds

The Flute/Tibia and Extra Voice sections give you access to a wide variety of conventional and traditional organ sounds — from jazz and pop to church and theatre.

Instant Registration Changes

The extensive Registration Menu section of the AR-100 gives you instant access to 384 different Registrations, covering a broad range of musical styles. Each Registration features complete Voice and Style (rhythm/accompaniment) settings to perfectly match the type of music. Moreover, sixteen Registration Memory panel buttons let you store your own custom Registrations and call them up instantly as you perform.
Original Voice Creation

Voice Edit

The Voice Edit feature provides simple, easy-to-use voice editing tools for creating your own original Electone Voices.
Dynamic, Realistic Automatic Accompaniment
The Style section of the AR-100 features 160 specially programmed rhythm and accompaniment patterns — in a wide variety of musical genres. The A.B.C. (Auto Bass Chord) gives you full, exciting instrumental backing — just like a real band — that automatically changes bass and chords according to the chords (and pedal notes) you play. Plus, the Keyboard Percussion lets you assign and play the realistic drum and percussion sounds from the keyboard.
L.M. Split
This special function lets you assign different Voices to assignable left and right sides of the Lower keyboard, effectively giving you a “third” keyboard.
Accompaniment Program and Sequence Program
The powerful Accompaniment Program function lets you create your own User Styles (accompaniment patterns) — including drum/percussion, bass, chord, pad and phrase parts. Each Style you create can have different Intro, Main A and B, Fill In, and Ending patterns. The Sequence Program function lets you connect your original User Styles together with the preset Styles to create up to four complete rhythm/accompaniment tracks, which you can automatically play back during your performance. Naturally, you can use the A.B.C. automatic accompaniment features with these Style sequences as well.
Wide Variety of Digital Effects

The AR-100 Voices can also be enhanced with a full range of high-quality effects, including Tremolo (for reproducing rotating speaker sounds), Symphonic/Celeste, Flanger, Delay, Reverb, and Sustain.
Recording of Performances with the Music Disk Recorder

Recording

The AR-100 also features a Music Disk Recorder (M.D.R.) for recording your Registrations and performances. The recording is completely digital and is stored to disk, which means you can edit it to your liking at any time, and no matter how many times you play it back, it will always sound exactly as you originally performed it. In addition to play of the included XG disk, the M.D.R. can play a wide variety of commercially available song disks, including XG and DOC (Disk Orchestra).
Large Custom Display
Advanced Sound Technology: The AR100 likely featured Yamaha’s advanced sound synthesis technology to produce realistic organ and instrument sounds.
Multiple Voices: It would have offered a variety of voices and instrument sounds, allowing the player to create diverse musical arrangements.

Styles

Accompaniment Styles: The organ may have included a range of built-in accompaniment styles, rhythms, and backing tracks to enhance musical performances.

Keyboard and Pedalboard: It typically came with a full-sized keyboard and pedalboard, mimicking the setup of a traditional organ.

Digital Effects: The AR100 may have had onboard digital effects like reverb and chorus to further shape and enhance the sound.

MIDI Connectivity: It might have featured MIDI connectivity for integration with other MIDI instruments and equipment.

User Interface: It would have had an intuitive user interface, likely with a display screen and dedicated controls for easy access to functions.