ARP Quadra

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ARP Instruments, Inc. Logo
Quadra by ARP Instruments, Inc.
Synthesis type: Analog
Polyphony: 1 (Bass), 2 (Lead), All (String, Polysynth)
Oscillators: 2 (Lead)
Multitimbral: 4
VCA: ADSR
LFO: Sine, Square
Keyboard: 61-key Velocity, Aftertouch
External control: CV/Gate, ARP system interface
Onboard effects: 1
Produced: 1978 - 1981

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The ARP Quadra is an Omni, Odyssey and a few other Synths in one box. It has 4 sections: Poly Synth, Lead Synth which is Duophonic like the Odyssey, Bass which is on the bottom two octaves like the Omni and Strings which are the same as an ARP Omni. There are 16 memories but they are not Proper memories. They simply recall which Parameters are active so you still have to do Pleanty of tweaking. Like the Polymoog it is not a true Polyphonic. It uses divided-down circuits for the Omni Part and there is no Portamento or Cross-Modulation. It only has one VCF and VCA for the Poly Synth section.It has a simple and usefull Arpeggiator for the lrad section. The Quadra uses the typical ARP Orange and Black colour-scheme.

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