Active ABY Amp Switcher

The Twin-City is an active amp selector that lets you connect any two guitar amps and switch between them or drive them both simultaneously without noise, loss of gain, or any degradation to your natural guitar tone.

Active circuitry for noise-free switching

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.

Specifications Audio circuit type: Class-A discrete FET buffer circuit Frequency response: Tailored for guitar Clip Level: +9dBu (Input), +9dBu (Output) Total harmonic distortion: <0.003% @ 1kHz Intermodulation Distortion: 0.003% Input Impedance: Varies with Drag™ Control, 22k to 1Meg Ohm Output Impedance: 1000 Ohms Noise Floor: -90dBu Features 180° polarity reverse, Drag Control General Construction: 14-gauge steel Size (L x W x D): 3.5" x 4.4" x 2.17" (89mm x 112mm x 55mm) Weight: 0.9lb (0.42kg) Shipping size (L x W x D): 6.25" x 4.5" x 2.5" (158.75mm x 114mm x 63.5mm) Shipping weight: 3.4lb (1.55kg) Power: 50mA, 9VDC (center pin negative) Conditions: For use in dry locations only between 5°C and 40°C Warranty: