Radial Engineering BigShot ABY True-Bypass Switcher

Radial Engineering BigShot ABY True-Bypass Switcher


The Radial Engineering BigShot ABY switching pedal efficiently drives your two-amplifier setup while accounting for any noise and polarity issues that may arise. The pedal’s two switches let you choose between two amps or run them both at the same time.

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The Radial Engineering BigShot ABY is a true-bypass switcher that allows you to select between two output points, such as two guitar amplifiers. The pedal has two footswitches that allow you to switch between amplifiers or feed your signal to both at the same time. You’ll be able to eliminate any hum or buzz sounds that may infect your power via the pedal’s ground-lift switch and on-board isolation transformer. The pedal’s circuitry assures your tone will remain clean along its routes and into any resulting amplifier.

Another essential feature is the 180° polarity switch, which helps calibrate any phase variations between your amplifiers, ensuring your low end is as powerful as it should be. This pedal is passive, which means that if it is not powered, its signal channels will continue to function normally. Plug in a 9V battery or power it from your pedalboard, and the LEDs will illuminate to show your outputs, allowing you to make critical amp-switching decisions in the dark. This pedal also has an always-on tuner output, allowing you to always monitor your tuning and keep any such module out of your signal chain.



  • True-bypass ABY amp selector with LED indicators
  • On-board transformer to eliminate hum & buzz
  • 180° polarity reverse to phase-match amps
  • 100% passive audio path, does not require power


  • Audio circuit type: Passive, true bypass
  • Frequency response: 20Hz - 20KHz
  • Gain: -0.3db
  • Input Connectors: 1/4"
  • Output Connectors: Two 1/4" outputs, switchable transformer isolated from Output-B
  • Extras: Tuner Output, ISO switch
  • Construction: 14-gauge steel
  • Finish: Durable powder coat
  • Size (LxWxD): 3.9" x 3.6" x 2" (99 x 91.4 x 50.8mm)
  • Weight: 1.25 lb (0.56 kg)
  • Power: 9VDC, center pole negative
  • Conditions: For use in dry locations only between 5°C and 40°C
Weight 2 lbs