Arp 2600 & 3604 Keyboard

Owned by Shadowfax, this 2600P (with Model 3604P keyboard) is fully functional and in good overall condition.  The exterior case shows some significant signs of edge wear.  This unit has been serviced by our techs with all new sliders, plus new ring modulator and VCA potted modules from CMS.  

The ARP 2600 is a semi-modular analog subtractive audio synthesizer, designed by Alan R. Pearlman with Dennis Colin, and manufactured by his company, ARP Instruments, Inc. as the follow-on version of the ARP 2500. Unlike other modular systems of the time, which required modules to be purchased individually and wired by the user, the 2600 was semi-modular with a fixed selection of basic synthesizer components internally pre-wired. The 2600 was thus ideal for musicians new to synthesis, due to its ability to be operated either with or without patch cords, and was, upon its initial release, heavily marketed to high schools, universities, and other educational facilities.

  • Analog Monophonic Semi-Modular 
  • Manufactured by ARP Instruments, Inc.
  • Dates produced: 1972-74
  • 3 Oscillators + LFO Mode (4027-1)
  • 24 dB/octave low-pass filter (4012)
  • 1 VCA
  • 1 ADSR & 1 AR Envelopes
  • Utility functions:
    • Input Preamp
    • Envelope Follower
    • Ring Modulator
    • Noise Generator
    • Multiple
    • CV Processors (Att/Inv)
    • Lag Processor
    • Sample & Hold
    • Panner
  • Spring Reverberator
  • External control: CV/Gate