ARP 2500

2500
ARP 2500
ManufacturerARP Instruments, Inc.
Dates1970–1981
PriceUS$7180 - US$19920
Technical specifications
PolyphonyDuophonic
TimbralityMonotimbral
Oscillator
  • 1004p
  • 1004r
  • 1004t
  • 1023
Synthesis typeAnalog Subtractive
Storage memorynone
Effectsnone
Input/output
Keyboard
  • 3002 Two voice, 5 octaves
  • 3222 Four voice, split, 5 octaves

The ARP 2500 is a monophonic (or duophonic) analog modular synthesizer. It was the first product of ARP Instruments, Inc., built from 1970 to 1981. Although only about 100 units were made, Sound on Sound called it "undoubtedly one of the most important electronic musical instruments ever made." It is notable for offering a huge range of programming possibilities via matrix switches instead of conventional patch cables. However, it was also very large, difficult to program, and expensive. Demand from musicians for a synth that was more affordable lead ARP to develop the 2600 and the Odyssey in the years after the 2500's release.