Radial Twinline

Effects Loop Interface for Two Amps


About this item



The Radial  Twinline is a unique device that enables a guitarist to share effects pedals between two amps when using each amplifier’s built-in effects loop.

  • Share your pedalboard between two amp effects loops
  • Optimize signal levels for each amplifier
  • Works with guitar pedals or balanced studio effects
  • Can be remotely controlled using a footswitch

Access all of your pedals with multiple amps

The Twinline can be thought of like a pedalboard switcher that lets you remotely toggle effects pedals from one amp’s effects loop to the other, effectively sharing your pedalboard between two amps. To accomplish this, the Twinline is equipped with two amplifier effects loop circuits – each with separate send and receive levels to optimize the signal path for each amp’s effects loop. Effects devices can be connected to the Twinline with unbalanced ¼” connectors for typical guitar pedals or balanced XLR connections for studio effects. To switch or bypass effects from across the stage, a remote control input allows you to toggle the Twinline using a latching footswitch.

The Twinline is an effects loop router that may be remotely switched to follow the active amplifier in an advanced stage setup. This enables the pedalboard or effects rack to utilize the two amplifier rear-panel effects loops while sharing the same effects. The circuit design is optimized to work from -30dB to +10dB, providing plenty of range for both guitar pedals and professional studio effects while introducing minimal artefact.

Audio circuit type:Class-A FET with transformer isolation
Dynamic range:105dB
Gain:Variable from -2.7dB ~ +3.6dB (From Amp Jack to EFX Send)
Total harmonic distortion:0.005% @ 1kHz
Intermodulation Distortion:0.01%
Input Impedance:10KΩ (From Amp), 1MΩ (FX Return)
Output Impedance:2200Ω (To Amp), 1KΩ (FX Send)
Common Mode Rejection Ratio:91dB @ 55Hz
Equivalent Input Noise:-103dB
Maximum Input:+25dBu (From Amp Jack), +8dBu (FX Input)
Ground lift, Effects Loop
Input Connectors:Balanced ¼” TRS or unbalanced ¼”
Output Connectors:Balanced ¼” TRS or unbalanced ¼”
Extras:Unity Gain Control Position: About 10 O’Clock on send & return EFX
Construction:14-gauge steel
Size (L x W x D):4.3″ x 1.9″ x 5.8″ (109mm x 48mm x 147mm)
Weight:2.4lbs (1.1kg)
Shipping size (L x W x D):4.7″ x 2.6″ x 11.6″ (119mm x 66mm x 294mm)
Shipping weight:3.4lbs (1.54kg)
Power:15V 100mA Unregulated/Center Pin Positive
Conditions:For use in dry locations only between 5°C and 40°C
Warranty:Radial 3-year, transferable


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