ARP Quadra

ARP Quadra is a vintage analog synthesizer manufactured by ARP Instruments in the early 1980s. It was used by many popular musicians, including Stevie Wonder, Herbie Hancock, and Jean-Michel Jarre.

The ARP Quadra is a four-voice polyphonic synthesizer with two oscillators per voice. It features a 24dB/octave low-pass filter, two envelope generators, and a noise generator. It also has a built-in arpeggiator and a sequencer. The Quadra also has a built-in chorus effect and a spring reverb. It has a wide range of sounds, from classic analog bass and lead sounds to more modern digital sounds.