A very good condition Yamaha QY70 sequencer, sound module and arranger. Recently a free very complete web console was created for the QY 70 and 100.

Includes an original Yamaha adapter.

A one of a kind mobile workstation with many uses.

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The Yamaha QY70 is a celebrated, pocket-sized music sequencer and synthesizer workstation released by Yamaha in 1997. Beloved for its portability and deep production features, it packs a complete 16-track MIDI sequencer and an expanded XG-compatible tone generator into a handheld chassis. It remains a cult favorite for lo-fi hip-hop, chiptune, and synth-pop artists who want a dedicated hardware sketching tool on the move.[1, 2, 3, 4, 5, 6, 7, 8]Key Specifications & Architecture

• Sequencer Engine: Features a powerful 16-track sequencer split between pattern and song modes. It records at a high internal resolution of 480 ppqn (clocks per quarter note), allowing for meticulous micro-timing and groove quantization templates. [1, 2]
• Sound Source: Equipped with an expanded General MIDI (GM) and Yamaha XG tone generatorcontaining 519 voices and 20 drum kits. While the sequencer handles 64 notes of polyphony, the internal sound engine features 32-note polyphony. [1, 2, 3]
• Effects Processor: Includes three simultaneous onboard effects processors covering global Reverb, Chorus, and a customizable Variation/Insert effect. Patches can be customized by editing the amp envelope, filter cutoff, and resonance. [1]
• Auto-Accompaniment: Loaded with over 4,000 preset phrases and 128 multi-part backing styles (such as Intros, Mains, Fills, and Endings) that automatically re-harmonize based on inputted chord progressions. [1, 2, 3, 4]

Hardware & Connectivity

• Form Factor: Highly compact "palmtop" form factor featuring a rubberized, non-velocity-sensitive micro-keyboard for playing and programming notes directly on the unit.
• Power Options: True mobile freedom via 6 AA batteries (lasting roughly 2 to 3 hours of continuous programming) or a standard Yamaha PA-3B AC power adapter.
• I/O Ports: Outfitted with standard 5-pin MIDI In/Out ports (allowing it to function as a standalone sequencer driving modern gear or a desktop tone module), a 3.5mm stereo line/headphone output, and a legacy PC/Mac host data port.
• Display: A small graphic LCD screen with a contrast wheel. Notably, the screen is not backlit, which is a common point of critique when operating in dim environments