Radial Engineering TWIN-CITY - Class-A active ABY 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.

Features

Active circuitry for noise-free switching
The Tonebone 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 playback 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: -90dBu

• 180° polarity reverse, Drag Control

• 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: Radial 3-year, transferable