Alpha One:  Alpha Juno DCO emulator

Alpha One: Alpha Juno DCO emulator

Alpha 1 generates the waveforms of Roland Alpha Juno’s DCO. Also, the high pass filter of the same characteristics as the Alpha Juno’s is embedded in the oscillator. Plus, the special chorus fx is also provided as a separate custom modfx unit.

Alpha 1 Quick Start Guide : Download

Want to try it? The simulator (oscillator only) page is here.


Buy on

May 28, 2022: Version 1.50 is released.
– Better sound quality
– A bit more processing power is needed. On NTS-1, the sound might glitch when all fx (mod, delay, reverb) are enabled.