Considered by many to be The Holy Grail of Polyphonic Synthesis, this meticulously refurbished Oberheim FVS-1 took 88 hours of skilled vintage synth tech time via our friends at tonetweakers to perfect. The FVS-1 contains 4 classic Oberheim SEM modules, each providing a single dual oscillator voice. Sounds are dialed in manually on each module, with global control over the most tweaked parameters via the programmer module, where patches are also saved and recalled. Since each SEM is manually adjusted, it’s hard to get them sounding exactly the same. The result is a much more organic, slightly detuned, richer, truly magical sound than you’d get out of most other poly synths.
Famous users include Lyle Mays, 808 State, Depeche Mode, Styx, Pink Floyd, The Shamen, Gary Wright, Joe Zawinul and John Carpenter (yep the film director of The Thing, Big Trouble in Little China, Starman, Escape From New York and other classics often composed and recorded music for his movies). You won’t find a better example of this beautiful classic synthesizer, so if you’re looking for an exceptional 4 voice, now’s the time. Visit our friends at tonetweakers.com to learn more.
The OB Four Voice contains 4 SEMs and a mixer module. This beautiful instrument can play up to 8 oscillators at once, for insanely humongous sounds.
One of the first
The 4 voice was one of the first polyphonic synths. Each of the four Synthesizer Expander Modules ( SEM ) can be assigned to a different note. Splitting voices between modules is also possible, as is a monophonic unison mode. A single voice is surprisingly powerful, offering 2 oscillators, 2 envelopes (1 for filter, 1 for volume), an LFO, pulse width modulation and a real sweet multimode filter with sweep-able mode (which few synths offered). The programmer module allows fast saving and recall of programmed sounds. With a combined 8 oscillators, these sound unbelievably fat. Even a single SEM sounds great. In unison mode, play all VCOs on one key for one of the most powerful vintage synth sounds ever. Nothing sounds like it to us and we’ve played everything. This is a personal favorite. This FVS-1 has the standard configuration of modules: 4 x Synthesizer Expander Module ( SEM ) Keyboard Output module Polyphonic Keyboard module Programmer module.
No clangs or zaps
If you are an analog synth head who makes musical sounds, you need one of these. To avoid disappointment though, we would recommend anyone looking for a dedicated sound effects machine to go for something else. This 4 voice is fabulous at musical tones and can make some interesting sound effects but there are better choices for clangs, zaps, explosions and similar atonal timbres.
Other famous users include: Joe Zawinul, Chick Corea, Larry Fast (Synergy), Jan Hammer, Herbie Hancock, Human League, Michael McDonald / Doobie Brothers, Patrick Moraz, Steve Porcaro, The Shamen, Tim Simenon, Depeche Mode, Vince Clarke / Erasure, Tangerine Dream, Stevie Wonder and many other influential musicians who could afford one – this was a very expensive instrument when it came out!









