Pricing and availability

We compare 600+ stores and found this item at 8 stores. Prices updated .

Sweetwater
3.5 (3)
$359.99
Guitar Center
5.0 (1)
$359.99
Amazon
4.8 (4)
$359.99
Reverb
5.0 (11)
$299.00 New
$319.00 Used
Musician's Friend
5.0 (1)
$359.99
Thomann
4.9 (8)
$395.00 $392.00 $3.00 · All time low
Vintage King
4.5 (2)
$359.99

Price History

Based on price data from 6 merchants for "Radial EXTC-500 Guitar Effects Interface". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Unleash your creative potential with the Radial EXTC-500 Guitar Effects Interface, a masterpiece in the world of studio recording gear that bridges the gap between the raw energy of guitar effects and the polished finesse of professional recordings. Whether you're looking to add a unique texture to your vocal tracks, some out-of-the-box effects on your drums, or even experiment with unconventional sounds, the EXTC-500 is your go-to module for bringing those ideas to life.

Crafted with simplicity and ease of use in mind, this interface effortlessly integrates with your existing setup, allowing you to connect line-level signals from your recording system, which are then unbalanced and converted to high impedance. This makes it incredibly straightforward to insert your cherished guitar pedals wherever you see fit. Front-mounted ¼" send and receive connectors ensure that tweaking your sound is always a hassle-free experience.

Apart from its intuitive design, the EXTC-500 stands out with its 100% discrete class-A guitar buffering system and transformer isolation, which together ensure that your audio maintains its integrity, free from the buzz and hum of ground loops. Additionally, features like 180º polarity reverse and a separate patch bay insert point offer even more control over your sound, ensuring that your recordings not only stand out but also capture the true essence of your creativity.

Key Features:

  • Balanced interface for seamless integration of guitar effects pedals with studio gear
  • Separate send and receive controls for optimum signal path optimization
  • Transformer isolated send eliminates ground loops, preserving audio quality
  • Features Radial's award-winning discrete class-A guitar buffering for unparalleled audio integrity
  • 180º polarity reverse to keep effects and balanced signals in phase
  • Easy access front-mounted ¼" send and receive connectors
  • Compatible with System 500 Mainframes for versatile setup options

Owner's manual

Radial EXTC-500 Guitar Effects Interface User Manual

Product specs

Processor Type Guitar Effects Interface

FAQs

What is the primary function of the Radial EXTC-500 Guitar Effects Interface?

The Radial EXTC-500 allows you to integrate guitar effects pedals into a professional studio setup, enabling you to use your pedals with pro audio equipment for creative mixing and processing.

Can the Radial EXTC-500 be used with any 500-series rack?

Yes, the Radial EXTC-500 is designed to fit into any standard 500-series rack, making it compatible with a wide range of studio setups.

How does the Radial EXTC-500 handle impedance matching?

The EXTC-500 is equipped with transformers and circuitry to ensure proper impedance matching between guitar effects pedals and studio gear, preserving the quality and tone of your signal.

Is the Radial EXTC-500 suitable for both live and studio applications?

While primarily designed for studio use, the EXTC-500 can also be used in live settings to incorporate pedal effects into a mix, provided you have a compatible 500-series rack on hand.

Does the Radial EXTC-500 require any special cables for connection?

The EXTC-500 uses standard 1/4" TRS cables for connecting guitar pedals, making it easy to integrate into most setups without needing specialized cables.

Reverb

Reverb

How To Use Effects Pedals as Outboard Gear | Recording Tricks

Video thumbnail for How To Use Effects Pedals as Outboard Gear | Recording Tricks by Reverb

How To Use Effects Pedals as Outboard Gear | Recording Tricks

Reverb

Reverb

Video thumbnail for Radial Engineering EXTC-SA "Reamping" Box for Guitar FX Pedals Overview - Sweetwater Sound by Sweetwater

Radial Engineering EXTC-SA "Reamping" Box for Guitar FX Pedals Overview - Sweetwater Sound

Sweetwater

Sweetwater

Video thumbnail for NAMM 2012 - Radial EXTC by Guitar World

NAMM 2012 - Radial EXTC

Guitar World

Guitar World

Video thumbnail for Joe Chiccarelli demo with the Radial EXTC 500 series module by Radial Engineering

Joe Chiccarelli demo with the Radial EXTC 500 series module

Radial Engineering

Radial Engineering

Video thumbnail for Radial Engineering EXTC 500 Series Guitar Effects Interface Overview | Full Compass by Full Compass

Radial Engineering EXTC 500 Series Guitar Effects Interface Overview | Full Compass

Full Compass

Full Compass

Reviews

PROS

  • Enables routing from DAW tracks through pedals enhancing creative workflow

  • High-quality build, durable and reliable

  • Improves sound clarity when using pedals, reducing hum/buzz

  • Simplifies integration of guitar pedals into studio setups

  • Supports a wide range of effects and gear, including non-guitar sources

  • Features like phase reverse and blend control offer added versatility

  • Facilitates tactile, ears-first mixing approach

  • Compatible with professional studio environments and acclaimed by experts

  • Ideal for both re-amping and processing with pedals

  • Encourages experimental use with various instruments

CONS

  • Requires a 500 series rack for full functionality, limiting some users

  • High price point for essentially a send+return path

  • Some units may have quality control issues, with reports of dead on arrival

  • Limited to mono processing without additional preamps for stereo setups

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Radial EXTC-500 Guitar Effects Interface.

Features and functionality

  • The Radial EXTC-SA is specifically noted for its capability to integrate guitar pedals into a studio setup, offering a stereo model for expanded functionality.

    Source
  • The EXTC-SA is praised for its easy integration and ability to quickly switch on and off, which suits hobbyists working in video creation.

    Source
  • The EXTC-500 is praised for eliminating hum and feedback, delivering a smooth, solid signal for recording guitar pedals.

    Source
  • The blend knob on the EXTC-500 is highlighted as a particularly valuable feature, enhancing its appeal for users seeking precise control over their sound.

    Source

Use cases and applications

  • It excels in using guitar pedals on vocals, synths, and drums, providing flexibility for sound experimentation without committing effects to the recording.

    Source

Comparisons

  • The Radial EXTC-SA is a preferred alternative to the Arturia Audiofuse, which has been reported to have reliability issues, particularly with its reamp feature.

    Source

User experience

  • Owners emphasize the Radial EXTC-SA's reliability over interfaces with reamping issues, highlighting its practicality for permanent desk setups.

    Source
  • Owners frequently use the EXTC-500, citing its reliability and effectiveness in integrating guitar pedals into a recording setup.

    Source

Setup and maintenance

  • The EXTC-500 comes with its own power supply, though users suggest ordering from thomann.de to receive the correct regional power adapter.

    Source

5.0 out of 5

Based on 1 Review and 1 Rating

5 star
4 star
3 star
2 star
1 star
xaqary

Zero issues, go to for re amping or pedal processing

Zero issues, go to for re amping or pedal processing. Been in my rack for ages.

If you need a solid solution for re-amping and including pedals in your mixes, etc.? This is the guy for you.

100% recommended

Artist usage

Add artist
See how The Crystal Method uses Radial EXTC-500 Guitar Effects Interface

The Crystal Method

Music Producer

The Crystal Method & Bubba Sparxxx

...
Verified via YouTube

can be seen at 0:17 in the video

See how Vance Powell uses Radial EXTC-500 Guitar Effects Interface

Vance Powell

Music Producer, Audio Engineer

...
Verified via Photo

Vance Powell utilizes the Radial EXTC-500 Guitar Effects Interface in his studio setup. This 500 series effect insert module allows him to seamlessly integrate pedal effects into his rack system, enabling creative combinations like adding distortion to vocal tracks or a wah effect to kick drums. The EXTC-500 transforms line signals into unbalanced instrument output levels and offers flexible control with front panel send/return terminals and rear omniport connections. A user-uploaded photo confirms this setup, showcasing Powell's innovative approach to mixing.

See how Steve Mazur uses Radial EXTC-500 Guitar Effects Interface

Steve Mazur

Guitarist

Our Lady Peace

...
Verified via Radialeng

I had been running tracks out of Pro Tools and processing them through stomp-boxes but the results were hit and miss. Then I heard about the EXTC 500. So great!! Now the tracks are always at the proper impedance and the whole phase flip for different pedals is genius. I don't see how I lived without it!

See how Lonas uses Radial EXTC-500 Guitar Effects Interface

Lonas

Music Producer

...
Verified via YouTube

At 22:44 in the YouTube video "EPIC HOME STUDIO Setup 2024 | Louis Johnson (studio tour)" by Andrew Masters, a Radial EXTC-500 Guitar Effects Interface is visible in Lonas's outboard gear rack, which is integrated under his workdesk.

See how Colt Capperrune uses Radial EXTC-500 Guitar Effects Interface

Colt Capperrune

Audio Engineer

...
Verified via YouTube

In the video titled "Epic HOME STUDIO Setup 2025 | Colt Capperrune (studio tour)" by Andrew Masters, at timestamp 15:15, a Radial EXTC-500 Guitar Effects Interface is visible in Colt Capperrune’s recording room, confirming its use by the artist.

See how Jack Shirley uses Radial EXTC-500 Guitar Effects Interface

Jack Shirley

Music Producer

...
Verified via Theatomicgarden

Listed on Atomic Garden website's equipment page

Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

Used With

Based on how musicians on Equipboard use Radial EXTC-500 Guitar Effects Interface, it is most commonly used with the following gear.

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