Petersen Engineering Spectra Equipoise - Spectrum Clone


Petersen Engineering

Spectra Equipoise information:

  • Modernised clone of a Boss SP-1 Spectrum, first released in 1977, and discontinued in 1981.
  • The Spectra Equipoise is a Parametric Equaliser with only two controls.
  • Frequency knob sets the boosted frequency between 500Hz and 5kHz.
  • Balance knob adjusts dry-to-wet signal ratio, boosting the frequencies with fixed gain and frequency width.
  • Function Similar to a fixed wah
  • True Bypass footswitch
  • Lightplate illuminates red when pedal is on
  • Standard 9v DC power supply for pedals (Boss style 2.1mm barrel plug with a negative tip orientation)

All of our pedals are hand assembled in the UK.

Most recent forum threads

Where to find one?

your browser doesn't support AJAX?

fx pedal stompbox stomp box guitar effects pedal bandpass bp bpf band-pass filter filter eq/excite/filter
Syndicate content

Subscribe to our newsletter

Also check out Effects Database's social media accounts: