Tonebone Bones Twin-City

The Radial Tonebone Bones Twin-City is an active AB/Y switcher and buffer designed to connect any two guitar amps and drive them simultaneously without noise, loss of gain, or degradation of the natural guitar tone. The pedal features Radial's highly acclaimed buffering technology and Drag™ control load correction circuitry, which allows users to compensate for cable signal loss and introduce the perfect amount of loading to replicate the interaction between the guitar and amp.

Key Features and Specifications:
- Buffered AB/Y with Drag™ load correction
- Isolated output eliminates hum and buzz
- 180º polarity sets both amps in phase
- Compact design to fit on any pedalboard
- Standard 9-volt power supply operation
- Audio Circuit Type: Class-A discrete FET buffer circuit
- Frequency Response: Tailored for guitar
- Total Harmonic Distortion: < 0.003% @ 1 kHz
- Intermodulation Distortion: 0.003%
- Input Impedance: Varies with Drag Control, 22 kΩ to 1 MΩ
- Noise: -90 dBu
- Clip Level: +9 dBu
- Output Impedance: 1 kΩ
- Construction: 14-gauge steel
- Power: 50mA, 9VDC (center pin negative)
- Dimensions (H x W x D): 2.5" x 4.5" x 6.25"
- Weight: 0.9 lbs (0.42 kg)

The pedal is constructed from heavy 14-gauge steel for durability and features Electronic Impulse Switching (EIS) for unmatched performance without the challenges posed by mechanical switches. Additionally, the Twin-City employs bright, easy-to-see LEDs for on-stage switching cues.

The Twin-City requires an external power adapter that outputs 9 to 12 volts DC with a 2.1mm barrel jack wired center pin negative, drawing a maximum of 100mA. It is important to note that using another type of power adapter may cause damage to the pedal.

The pedal also includes a ground lift switch and 180º polarity reverse switch to ensure both amplifiers play in phase while reducing noise to a minimum, even when using older vintage amps that are generally more prone to noise.

The Radial Tonebone Bones Twin-City is a powerful AB/Y switcher that delivers natural tone, punch, and clarity without inducing noise of any kind.