The Radial BigShot ABY is a passive, true-bypass signal router designed to switch between two amplifiers or drive both simultaneously without compromising your guitar's tone. Built for reliable stage use, it provides practical solutions to the common issues encountered in dual-amp setups, including ground loops, phase cancellation, and unwanted noise.

Two latching footswitches allow instant selection between amplifier A, amplifier B, or both outputs together. An integrated isolation transformer and ground lift switch help eliminate hum and buzz caused by ground loops, while a 180° polarity reverse switch ensures both amplifiers remain in phase for a full, balanced sound.

The BigShot ABY can also be used as a silent tuning mute when paired with a tuner, or as a simple channel selector for vintage amplifiers with multiple inputs. Its passive audio path operates without power, while an optional 9V supply powers the onboard LEDs for clear visual indication during performance.

• Circuit: Passive, True Bypass
• Operation: Select Amplifier A, Amplifier B, or Both
• Outputs: 2 × Amplifier Outputs, 1 × Tuner Output
• Isolation: Transformer-Isolated Output B
• Ground Lift: Yes
• Phase Reverse: 180°
• Power Requirement: None (9V DC optional for LED indicators only)
• Switching: Two Latching Footswitches

• 95 mm wide 95 mm high

Switch Utility

Found Sound Australia Pty Ltd.
110 Albert St
Brunswick East, VIC 3057
Australia