Cherry Audio releases ARP Quadra synth plugin

Released in 1978, the Quadra is definitely a rarity, and we haven’t seen it much in software, either. In fact, Cherry Audio says that this is the first time it’s been emulated as a virtual instrument.

Cherry Audio’s Quadra introduces improvements throughout every section, bringing out the full potential of the original ARP design. Each instrument section can now be layered anywhere across the keyboard, with increased transposition ranges for most sections.

The paraphonic Poly Synthesizer section has been beefed up with an additional octave, optional oscillator drift, velocity control, new modulation capabilities (including pulse-width modulation), and additional waveforms. The Lead Synthesizer section has been enhanced with a more powerful arpeggiator, additional waveforms, adjustable note priority, and numerous other small improvements. Cherry Audio have turned the Quadra’s rudimentary LFO into a full-featured, multi-waveform, tempo-syncable LFO. They have also added a deeply flexible bender section that allows pitch bend wheel data to independently bend pitches and modulate filter cutoff for each instrument section.

Cherry Audio modeled the ARP Quadra’s 14-stage phaser, and added additional effects – chorus/flanger, echo, and reverb – that can also be turned on and off independently for each instrument section. Imagine strings bathed in reverb, a poly synth slowly phasing and flanging, and a lead synth with a slapback delay, all layered together to create a beautiful swirling pad. The sound design possibilities are endless!

Quadra includes a multiple out version for maximum flexibility. The standard “Quadra” instance mixes the four sections to a summed output. “Quadra Multi Out” includes five sets of outputs: a standard stereo mix, plus dry independent outputs for each section, as found on the original hardware.

Find out more on the Cherry Audio website. Quadra is available now in VST/AU/AAX formats for the introductory price of $39 (regular price will be $59). You can also download a demo if you just want a cheeky play about with the plugin.


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Director and DJ, Ian French (Naif) is passionate about every genre of music from Breakbeat, to Drum & Bass, to Techno and House. A man that lives in a world of beats and bass, and total confusion about life!