This instrument seamlessly combines the revered characteristics of the Prophet-5 Rev1, Rev2, and Rev3, featuring genuine Curtis analog VCOs and innovative 2140 low-pass filters by Dave Rossum. The Rev switch allows you to effortlessly shift between filter designs, delivering the authentic sound of the original Prophet-5 with a modern twist. This unique feature introduces subtle fluctuations and differences in response times and frequencies, replicating the randomness of the vintage synthesizer. From the stable "4" reminiscent of Prophet-5 Rev4 to the temperamental "1" of Prophet-5 Rev1, the Vintage knob lets you dial in the desired level of old-school mojo. Poly Mod and Enhanced Unison Rediscover the timeless sound of Prophet-5 with Poly Mod, faithfully recreated with modulation sources like Filter Envelope and Oscillator B. Unleash a spectrum of sounds by modulating Oscillator A frequency, Oscillator A pulse width, and low-pass filter. The enhanced Unison mode introduces configurable voice count, variable detuning, and chord memory, while Glide seamlessly works in and out of Unison, adding depth and expressiveness to your compositions. Effortless to Program The Prophet-5 features unparalleled ease of use. The knob-per-function front panel offers instant access to all sound-shaping controls, providing immediate gratification. Live panel mode, activated by toggling off the Preset button, aligns the panel settings with the sound, ensuring a direct correlation between visual feedback and auditory output. With 200 permanent factory programs and 200 rewritable user programs, programming the Prophet-5 is as effortless as it is powerful. Features: Authentic Rev1, Rev2, and Rev3 emulation with the Rev switch Vintage knob for introducing randomness and old-school character Poly Mod for versatile modulation possibilities Enhanced Unison mode with configurable voice count and chord memory Velocity sensitivity and aftertouch for modern expressiveness Effortless programming with a knob-per-function front panel Expandable to 10 voices with optional Voice Expansion Card