Yamaha YM2414

Updated on Jan 02, 2025

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The YM2414, a.k.a. OPZ, is an eight-channel sound chip developed by Yamaha. It was used in many mid-market phase/frequency modulation-based synthesizers, including Yamaha's TX81Z (the first product to feature it, and was named after), DX11, YS200 family, the Korg Z3 guitar synthesizer, and many other devices. A successor was released as the upgraded OPZII/YM2424, used only in the Yamaha V50.

The OPZ has the following features:

Eight concurrent FM channels

Four operators per channel

Eight selectable waveforms

Fixed-frequency mode, which can go much lower in the OPZII, enabling 0 Hz carriers or low rates for native chorusing

Dual low frequency oscillators

Products

The chip was used in the Porta Tone PSR-80.

References

Yamaha YM2414 Wikipedia

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