The Radial Engineering EXTC-500 Guitar Effects Studio Interface enables creatively inclined engineers to introduce guitar pedals into the signal chain. The EXTC Studio Interface takes a balanced signal, unbalances it and reduces the level so that it can properly interface with hi-Z guitar pedals. Once the signal is processed, this studio interface reverses the process by taking the unbalanced signal and reconverts it back to a +4 dB balanced line level signal for easy manipulation in the professional recording environment. This, for instance, lets you add wah to a kick drum, tube distortion to a vocal track, or maybe an old-school tape echo to an acoustic guitar. As pedals can be noisy, the EXTC Studio Interface is transformer isolated to eliminate hum and buzz caused by ground loops. A 180° polarity reverse ensures that the wet-dry mix is in phase.
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Description
Radial Engineering EXTC-500 Guitar Effects Studio InterfaceThe Radial Engineering EXTC 500 Guitar Effects Studio Interface enables creatively inclined engineers to introduce guitar pedals into the signal chain. The EXTC Studio Interface takes a balanced signal, unbalances it and reduces the level so that it can properly interface with hi Z guitar pedals. Once the signal is processed, this studio interface reverses the process by taking the unbalanced signal and reconverts it back to a +4 dB balanced line
100% discrete class-A signal path
Transformer isolated to eliminate noise
Separate send & receive level controls
Front panel ¼" jacks for easy connection
Lets you fatten up a track using pedals
Allows you to add guitar effects like overdrive to voice
Lets you use effect pedals in new ways
Creative tool to make your tracks stand out
Easy to use
Isolated output to eliminate ground loops
Wet-dry mix to adjust the balance
Can also be used for reamping
100% steel casing reduces magnetic interference from other nearby modules that may cause pollution
Adjusts the wet-dry mix between the original unprocessed signal and the EXTC's effects loop
Lets you reverse the polarity of the wet signal path and bring it into phase with the dry signal when they are being mixed together
Turns the Omniport insert jack into a second send & receive path for additional processing
For adjusting the send level to the pedals and return path level back into the EXTC to optimize the signal-to-noise ratio
Allows you to separate send and receive ¼" jacks used to connect guitar pedals to the EXTC. Front panel mounted to make connections easy for use on the desktop
TRS jack is set up as an insert to connect to a remote patch bay or effect device. This follows the tip-send, ring-receive convention. It is available when used with Radial Workhorse racks.
Double-sided and gold-plated edge connector ensures enhanced conductivity and signal transfer
Helps eliminate hum and buzz caused by ground loops
Radial's FET amplifier delivers natural tone and optimal signal transfer for high-impedance instruments and effects
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.9 ★★★★★
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Product Reviews
★★★★★ 5
A godsend!!!
Like many others have claimed, this was an absolute godsend for saving my damaged skin barrier. I have combination skin type so gel version was way more effective on my skin than the cream version and did not pill.
My only reservation is that it’s such a small amount of product for the price. I felt that I went through this bottle faster than I would have like for the price I paid.
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Reviewed in the United States on May 11, 2026
★★★★★ 4
Top 5️⃣
I’ve been really impressed with La Roche-Posay Cicaplast Gel B5. The lightweight gel texture feels soothing and absorbs quickly without leaving my skin greasy or sticky. It has helped calm dry, irritated areas and noticeably improved the appearance of my skin barrier after just a few uses. I especially love that it’s fragrance-free and gentle enough for sensitive skin. It layers well with the rest of my skincare routine and works great on dry patches, redness, and minor irritation. A little goes a long way
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Saved my skin during the winter
Such a great multi-purpose product!! I’ll use under my eyes if my skin is dry, or if I’m using an active that I know will dry my skin. I also would slather it on during the winter if I was walking or running outside and I knew it would be windy. It really helped against windburn.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Amazing product
This stuff is wonderful, whenever my skin is irritated I use this to help restore the barrier!
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Reviewed in the United States on May 11, 2026
★★★★★ 5
Only for the pale skinned ones
Style: SPF 50, Size: 3 Fl Oz (Pack of 1)
Great coverage and texture! However, it left a white cast over olive toned skin. I looked sick. But looked perfect on my pasty redhead daughter.
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Reviewed in the United States on March 18, 2026