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  • "I use my 3 EXTC's on every recording and mix I do. They are absolutely positively perfect for interfacing low level gear such as pedals, or in my case Tape Echos into my console. Been wanting someone to do this in a 500 space for years. It's just a great tool!"

    Vance Powell
    (White Stripes, Radiohead, Kings of Leon, Buddy Guy)
    Vance Powell

EXTC-SA Guitar Effects Interface

Part no. R800 1420

  • Balanced interface for guitar effects pedals
  • Separate send & receive controls optimize signal path
  • Transformer isolation helps eliminate ground loops
  • Creative tool helps your mix stand out from the rest

The Radial EXTC-SA™ is a stand-alone audio interface that lets you incorporate guitar effects into the realm of pro-audio recording. Just imagine… add a touch of grit to a vocal track, some wah on a kick drum, maybe flange a violin…The EXTC is a creative tool made for your esoteric-inventive side, ready to unleash fresh new sounds that will make your recordings stand out from the crowd.

And it's super easy to use: connect a line level signal from the recording system. The EXTC-SA unbalances the signal and converts it to high impedance where guitar pedals can be inserted at will. Simply plug in, turn the track on, set your levels and adjust the blend for just the right amount of magic. Be prepared for instant amazement. Legalized ecstasy.

Features include Radial's award winning 100% discrete class-A guitar buffering for ultimate audio integrity, transformer isolation to eliminate buzz and hum caused by ground loops, 180º polarity reverse to keep effects and balanced signals in phase, and two loops that can let you compare signal paths or combine them to create your magical masterpiece.

The Radial EXTC-SA is without a doubt one of the most innovative effect manipulating devices ever made. And it opens the door to new sounds by taking Reamping™ technology to an all new level.

The EXTC... be prepared for wild & wonderful!

EXTC 500

Guitar Effects Interface


Effects Switcher for Voice or Instrument


SA Series Rack Adaptor

EXTCSA™ - Applications
Reamping™ through Pedals

Take a dry track, send it to the EXTC which in turn feeds your pedals. This is the perfect way to add some extra zest to a vocal track; an envelope follower to a kick; or some wah to that Hammond.

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Reamping with the EXTC

The EXTC is well suited for Reamping. Simply connect the pre-recorded channel to the EXTC and then split the signal off to two amps using the send connectors. You are set to go!