Used but in good working condition: professional multi-effect processor from Yamaha for 19-inch rack.

Has visible wears and scratches. See attached pictures.

The Yamaha SPX900 is an iconic 1U rack-mountable digital multi-effect processor that Yamaha introduced in the late '80s. The unit quickly became a studio standard for both live sound and professional recordings. The SPX900 is known for its distinctive, slightly grainy vintage digital sound (44.1 kHz / 16-bit) and unmatched flexibility for its time (1988-1989).


Key features and specifications

  • Sound quality: A dynamic range of 90dB with a transparent and flat frequency response.
  • Simultaneous effects: Can process up to 5 effects at the same time (like compression, distortion, EQ, modulation, and reverb).
  • Memory slots: Equipped with 50 factory presets and 49 user-configurable memory slots.
  • Connections: Professional balanced XLR inputs and outputs, 1/4" TRS ports, and full MIDI in/out support for real-time control.
  • Enhanced tweakability: Offers significantly more in-depth parameters (like diffusion, density, and feedback delay) than its legendary predecessor, the SPX90.

This item is sold As-Described

This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.Learn More.

Listed7 days ago
ConditionGood (Used)
Good condition items function properly but may exhibit some wear and tear.Learn more
Brand
Model
  • SPX900 Professional Multi-Effect Processor
Finish
  • Black
Categories
Year
  • 1980s
Made In
  • Japan

Product safety information may be available here.

Randolf's Gear

Tessenderlo-Ham, Belgium
Joined Reverb:2026

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