Echopark Soap Box - Harmonic Boost



A professional unit Ideal for both studio and live situations. The Soap Box harmonic boost/ buffer is specifically designed to replicate a human hand turning up the volume control of a guitar amplifier. Clear, simple, straightforward. Use to simply boost subtle passages in a live performance, lend additional  harmonic content to arpeggios and complex chords, in front of your signal chain as a buffer, during recording sessions where multiple effects are in use, or when you just want to go from 'clean' to "cranked" without sacrificing or coloring your amplifier's tone.

100% Crafted by hand in Los Angeles using select, mil spec and full-size components, soldered onto a turret board with real leaded solder.


  • Right jack 'Input' 
  • Left jack "output"
  • 9-volt battery included
  • DC power is center negative only
  • Red Indication light is lit when engaged
  • True bypass switching
  • Level Control, Adjust can sweep from 0-15bd of pure pre-amp gain and Harmonic boost.

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fx pedal stompbox stomp box guitar effects pedal amplifier amp amplification preamp pre-amp volume/amplification
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