The Radial Twin-City uses a class-A input buffer to drive the amp outputs, which reduces susceptibility to noise and allows for completely silent switching on stage. To eliminate hum and buzz from ground loops, the Twin-City is equipped with an isolation transformer on output-B, along with a ground lift switch and 180⁰ polarity reverse switch that ensures both amplifiers play back in phase with each other. At the input, Drag Control load correction allows you to recreate the natural load on the pickups as if you were connected directly to a tube amplifier, allowing the natural tone of your instrument to shine through. 

• Active ABY amp switcher & Class-A buffer
• Isolated output eliminates hum and buzz
• 180° polarity reverse to phase-match amps
• Drag Control load correction for natural tone 

• Type: ABY Switcher
• Polarity Switch: Yes
• Ground Lift: Yes
• Inputs: 1 x 1/4"
• Outputs: 2 x 1/4"
• Power Source: 9V DC power supply (sold separately)
• Height: 2"
• Width: 3.6"
• Depth: 4"
• Manufacturer Part Number: R800 7115 

Please feel free to reach out to our knowledgeable sales staff with any additional questions!