Built on a base of Class A FET buffers, an isolation transformer on the second output for greater noise reduction, and ground lift switch and polarity reverse for ensuring even output from both amplifiers, the Radial Tonebone Twin-City ABY Switcher is an industry standard of an essential effect. Able to switch up sound sources on the fly, the pedal is ready for years of use and abuse thanks to its heavy-gauge steel chassis and military-grade internal components. Whether your playing seven-string or synth, if you've got amps to navigate, this is your guy.