Check the listing for details. Behringer MonoPoly 4-voice Analog Synthesizer. Condition: New. Listed at 549.00 USD. Tap into the Epic Synth Sounds of the ’80s By the dawn of the 1980s, analog synthesis had matured to a level of sophistication that nascent digital technology could scarcely hope to match. In the feverish musical creativity of early ’80s, the clangorous sounds of early digital synths were offset by the supremely lush sounds of a new crop of analog synthesizers, both joining forces to spearhead the synth pop insurgency of the coming decade. One such analog synth, the MonoPoly, made its debut in 1981. Equipped with no less than four oscillators (each with multiple waveforms), the MonoPoly was capable of insanely fat sounds and prodigious bass that could blow holes through walls. As good as it was, it was, curiously, only on the market for three years.