Radial Engineering BigShot ABY User manual

BigShot™ABY True Bypass Switcher
True bypass ABY amp selector with tuner out, On-board transformer to eliminate
ground buzz, 180° polarity reverse to phase-match amps, Compact and rugged
for pedalboards, Plug and play easy to use
Designed for the purist, the Radial BigShot ABY is an ultra compact, 100% passive foot switch that
provides true bypass ABY amp switching capabilities with A or B toggle and A + B combine
functionality. This assures the guitar signal is routed directly to the amp without any buffering,
loading or tone altering circuits.
To add versatility, the BigShot ABY has a built-in transformer that can be engaged to eliminate
troublesome ground loops. Once on, you can also ensure your two amps are properly in phase
using the 180º polarity reverse switch.
The compact yet ultra rugged design makes the BigShot ABY ideal for pedalboard designs where
space is always at a premium. Furthermore, because it does not require powering to make it work,
it eliminates the need for batteries and space hungry power supplies.

BigShot™ ABY with two amps and tuner:
This setup lets you select between two amplifiers with the right footswitch and combine both amps with the left
footswitch. The always-on tuner output adds the convenience of 'anytime' tuning adjustments.
In this setup:
• Instrument goes into the ABY's INPUT jack
• Amp-A connects to the the OUTPUT-A jack, Amp-B to OUTPUT-B
• Tuner is connected to the ABY's dedicated tuner-out jack
BigShot™ ABY amp / tuner mute:
With this setup you can mute your amp for a quick tuneup with a single footpress of the right (A-B toggle)
footswitch. In this scenario, the tuner is completely out of the circuit when not needed for the purest guitar
tone.
In this setup:
• Instrument goes into the ABY's INPUT jack
• Amp connects to the ABY's OUTPUT-A jack
• Tuner is connected to the ABY's OUTPUT-B jack

BigShot™ ABY as an instrument selector:
To illustrate the versitility of the ABY, you can use it 'backwards' as an instrument selector! Switch between the
two instruments with the right footswitch.
In this setup:
• Your amp gets its signal from the ABY's INPUT jack
• One guitar connects to the OUTPUT-A jack, the other to OUTPUT-B
• Tuner is connected to the ABY's dedicated tuner-out jack