Radial Big Shot ABY True Bypass Switcher

Got two guitar amps? Switch between them -- or combine them -- with Radial's BigShot true bypass switcher. This passive ABY footswitch requires no batteries.

The Radial BigShot ABY is a compact ABY switcher that enables you to either switch between two amplifiers or combine the signal when you want both amps to play at the same time.

Designed for the purist, this true-bypass ABY switcher is completely passive, meaning that there are no tone-altering buffers in between the guitar and the amplifier. With the BigShot ABY, you get the pure tone from your guitar plugged direct into your amp! To add versatility, the BigShot ABY is also equipped with a separate tuner out. This 'always on' output feeds your tuner for constant monitoring while keeping it out of the signal chain. Should you experience hum and buzz problems due to ground loops, the BigShot ABY comes to the rescue with a built-in isolation transformer and ground lift switch. Once engaged, you can toggle the polarity of the second amplifier to ensure both amps play in absolute phase.

In use, the BigShot ABY is both simple to use and efficient on stage. When powered by an external 9V supply or pedalboard power brick, full size super-bright LEDs spring to life to provide instant on-stage amplifier status readout. When power is unavailable, the passive audio signal path still works, unaffected. The compact yet ultra-rugged design makes the BigShot ABY ideal for pedalboards where space is always at a premium.

Combine two amps and a tuner

The BigShot ABY makes it easy to switch between two amps. With the built-in isolation transformer, hum and buzz caused by ground loops can be read more eliminated. A separate tuner out keeps this tone altering device out of the main signal path.

Use the BigShot ABY to mute your amp

You can use the BigShot ABY as a simple mute footswitch for quiet on-stage tuning. Simply depress the AB selector switch and the signal going to the amp is turned off. This keeps the signal going to the tuner output always on, allowing you to tune without bothering others.

Use the ABY to switch channels to an amp

The BigShot ABY can also be used to switch channels on older vintage amps that do not have remote switching. Simply send the OUT-A and OUT-B to the two channels on your amp and select channels as needed.


- True-bypass ABY amp selector with LED indicators
- On-board transformer to eliminate hum & buzz
- 180-degree polarity reverse to phase-match amps
- 100% passive audio path -- does not require power
WARNING: Cancer and Reproductive Harm - www.p65Warnings.ca.gov.
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Circuit Type: Passive true-bypass

Tuner Output: Yes -- always-on tuner out

Transformer: Radial special design 1:1 isolation transformer

Ch-A/B Isolation: Yes -- ISO switch on Output-B

Ground Lift: Yes -- LIFT switch on Output-B

Phase Reversal: Yes -- 180 degree phase switch on Output-B

Heavy-duty high-cycle :
A - B -- toggles between A or B
BOTH -- both channels or one

Construction: 14 gauge steel, baked enamel finish

Size: 3.6 in. w x 3.9 in. d x 2 in. h (92 x 99 x 51mm)

Weight: 1.25 lbs. (0.56 kg)

Warranty: Radial 3-year limited warranty

Warning -- Possibility of electrical shock hazard exists. Please read the warnings in the user manual before attempting to connect amplifiers to this device.
Dimensions and Weight in Packaging
Base Item
Shipping Weight: 1.5 lbs
Shipping Dimensions: 7 x 4 x 3 in
Manufacturer Part Number (MPN): R800 7210 00

For support or warranty questions, please contact the manufacturer:
Phone: 604-942-1001

Reviewers gave this product an overall rating of 5 out of 5 stars. (10 ratings)
Submitted January 30, 2012 by Michael M in Sheldon, VT
"Radial Big Shot ABY True Bypass Switcher is a solid noise free quality unit !"
Overall: 5 out of 5 stars
(see rating details)
Verified Customer zZounds has verified that this reviewer made a purchase from us.
Purchased this unit after researching ABY switchers and this was the one most recommended. It is a solid, noise free excellent ABY switcher. This is non powered therefore has no Led lights but for me this was not an issue as I am using this on a VOX AC15 to switch from normal to top boost (or both) channels. This unit is just what I needed plus I don't have to worry about batteries or power cords. I highly recommend this unit but if you need led lights go with the more expensive Radial Twin City Bones ABY switcher.
Musical Background:
35+ years guitar, bass and keyboards.
Musical Style:
Classic rock, blues.
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