Here is a Yamaha QY300 from the mid-late 1990’s.
It is a portable music sequencer and synthesizer originally released in 1994. It was designed to be a powerful and portable music production tool for musicians on the go. It has been used by a variety of artists, including the likes of Bjork, The Prodigy, and The Chemical Brothers.
The Yamaha QY300 is a powerful sequencer and synthesizer that allows users to create and edit music on the go. It features a 16-track sequencer, a built-in synthesizer, and a variety of effects. It also has a built-in drum machine and a variety of rhythm patterns. Additionally, it has a built-in MIDI interface, allowing users to connect to other MIDI devices. The Yamaha QY300 also has a built-in LCD display, allowing users to easily view and edit their music.
This unit powers up and appears to work as it should, however, every function/feature has not been tested.
There is a crack on the left side that does not affect functionality. See photos.
A non-original power supply which works fine is included.
SEQUENCER SECTION
- Songs: 16 ‘Music’ Tracks, plus Pattern, Chord and Tempo Tracks.
- Patterns: 8 Tracks.
- Phrases: 1 Track.
- 10 Songs: 53,000 note capacity.
- 100 Styles x 8 Sections = 800 Patterns.
- Chaining of up to ten songs.
- 28 Preset Chords.
- 96 pulses per quarter note tempo resolution.
- 64‑note polyphony.
- Realtime, Step, Punch‑In and Step Insert recording modes.
- 3093 Preset Phrases:
865 Drum phrases.
290 Percussion phrases.
582 Bass phrases.
412 Guitar Chord phrases.
117 Guitar Riff phrases.
655 Keyboard Chord phrases.
172 Keyboard Riff phrases. - 100 User Phrases.
TONE GENERATOR SECTION
- AWM (Sample & Synthesis) synthesizer.
- 128 preset voices.
- 8 drum kits (compliant with General MIDI System Level 1).
- 28‑note polyphonic.
- Songs: 24‑part multitimbral (16 sequence parts plus 8 pattern parts).
- Patterns: 8‑part multitimbral.
- Phrases: monotimbral.
REVERB EFFECTS
- Hall
- Room
- Plate
- Echo












