The ARP Quadra was a 61-key analog synthesizer produced by ARP Instruments, Inc. from 1978 to 1981. The machine combined pre-existing products: the Omni, Odyssey, a Solina-esque string synthesizer unit, a phaser and a divide-down organ with ADSR envelope, and a 4075 24 db low pass filter into one box. It has four sections.

The Quadra is pretty much a hybrid version of ARP's Omni II and Solus synths. It's a four-section synthesizer consisting of a Bass synth, Poly synth, Lead synth, and String synth. It is quite good at emulating each of these sounds and can function in any of its four modes at a time with the ability of layering the different sections!

With no money to invest in radical new developments, ARP had lost its way and needed to do something — fast.The result was the Quadra, a beautiful, sleek, powerful, fully programmable polysynth that sounded amazing and returned ARP to its rightful place at the head of...

Legendary 1978 vintage Arp Quadra Analogue Synthesiser. Rare as hen's teeth and one of the coolest analog synths ever made it comes fully serviced and calibrated for sale. Re-capped throughout, the keybed has been cleaned and re-bushed and the memory battery updated. All features work perfectly.

"The Quadra's four sections are: a bass synthesizer, string synthesizer, polyphonic synthesizer, and two-voice, touch sensitive lead synthesizer. A stereo, voltage controlled phase shifter is also included, designed for the Quadra's special requirements.

Add in the lush 14 stage voltage controlled analog phase shifter, a sequencer (more like arpeggiator), assignable aftertouch, 61 key keyboard, and package it all into the coolest looking synth design ever and you have an ARP Quadra!

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Jul 2, 2024 · The ARP Quadra is an analog synthesizer which was manufactured between 1978 and 1981 by ARP Instruments. It's considered a hybrid ARP Omni-2 and Solus synth, with four modes including bass synth, poly synth, lead synth and strings.

A detailed examination of the features and legacy of ARP's Quadra synthesizer, manufactured between 1978 and 1981. Combining strings, a monosynth, a bass synth and a polyphonic synthesizer, did ARP create the keyboard equivalent of 'Wash and Go', or a jack of all trades and master of none?

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 ARP Quadra was a 61-key analog synthesizer produced by ARP Instruments, Inc. from 1978 to 1981. The machine combined pre-existing products: the Omni, Odyssey, a Solina-esque string synthesizer unit, a phaser and a divide-down organ with ADSR envelope, and a 4075 24 db low pass filter into one box. It has four sections.

Vintage ARP 2600 Synthesizer w/ 3620 Duophonic Keyboard - Excellent! View similar gear from other sellers on Reverb. Watch this gear and we'll notify you if it becomes available again. ARP Quadra in very good shape, just checked and calibrated.

The Cherry Audio Quadra is a super-accurate and immensely improved emulation of the ARP Quadra synthesizer, originally released in 1978.

The Quadra is a synthesizer well suited to live performance use. The 8048 microcomputer and 128k of CMOS SRAM memory recalls 16 stored sets of on/off decisions about which waveforms and modulations are turned on in each of the four sections, and lead intervals.

For sale is an Arp Quadra, one of the rarest and coolest vintage analog synthesizers. It's a super unique with very interesting tone and layout. This particular unit has some cosmetic wear, but it is 100% fully functional, plays perfectly & sounds amazing.

The Quadra's Filter & The Continuing Mystery Of ARP Filters. The Quadra incorporates two ARP 4075 filters: one for the Lead synthesizer, and one for the Polysynth section. The 4075 is a self-oscillating 24dB/octave device introduced by ARP in 1976, which became the company's standard filter for most of its instruments thereafter.

Arp Quadra restored For sale is an Arp Quadra, one of the rarest and coolest vintage analog synthesizers. Super unique with very interesting tone and layout.

The Quadra is a synthesizer well suited to live performance use and has been used by 808 State, ELO, Genesis, The Human League, Pink Floyd, New Order, Nick Rhodes (Duran Duran), Joe Zawinul, and film-maker John Carpenter.