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.
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4.6 ★★★★★
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Product Reviews
★★★★★ 4
Chuckit medium rebound balls
Size: Medium
My 8 month old German shepherd dog loves these balls. They are easy to throw, they bounce great, they are very chewable! She keeps one in her mouth most of the time. It satisfies her need to chew and she does not chew other things. She drops it in the water and lets the hole fill up and drinks that way. The only problem that has caused is suction in her mouth and difficulty in dislodging it for her. However, she would be lost without it!
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Reviewed in the United States on April 19, 2023
★★★★★ 5
These are definitely indestructible
Size: Medium
Both of my dogs can destroy a ball in a matter of minutes if I let them play with them (supervised) as is. Well not with these balls. They are the ONLY ones I have found that are 100% indestructible. Please only let your dogs play with these as a toy when supervised though. They go really far when throwing them, so both dogs get a good amount of running and exercise with these. I also bought these because they have the hole in the middle of the ball which is very important in the event that a dog gets one stuck at the back of their throat. This allows them to breath unlike those without this hold. It's an unlikely event, but as dog owners, we all need to be aware of this and educate ourselves on what to do if this SHOULD happen. This isn't a scare tactic, nor a reflection of this particular brand, it can happen with any type of ball. My two dogs are about 45ish lbs and the size is perfect for them, I don't want anything smaller than this. They love them. There is no annoying squeak. Really easy to wash after use. Some balls take forever to get the slimy saliva off, but these don't.
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Reviewed in the United States on September 25, 2025
★★★★★ 5
He loves this ball
Size: Medium, Size: Medium
My dog loves this ball. It’s the perfect size, he enjoys playing fetch and this ball has been his fav one. Thank you guys for making my lil one happy
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Our German Sheppard loves these
Size: Medium
These cost a bit more than tennis balls, but they are so much nicer and longer lasting. For starters, they stay cleaner than tennis balls because they’re smooth rubber. Dirt won’t build up on them and if anything does stick, like grass or soil, it falls off once the dog slobber dries. They’re also thick, so they don’t fall apart or blow out like a normal tennis ball does in our dog’s jaws after 30 seconds. Our GS chomps on these like crazy and the only damage they’ve suffered is a crack that developed from the edge of the hole, but the crack is growing very slowly and none of these balls have totally failed yet. The balls do whistle when thrown ant high speed and that may help a dog track and locate it, but I’m not sure. Our neighbors hear the whistling too so it’s far from silent. Lastly the orange ball is easy to locate out in our yard, but the dark blue practically disappears.
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Reviewed in the United States on April 6, 2025
★★★★★ 5
Great for smaller dogs
Size: Small
These two balls are perfect for the smaller mouthed dog that loves to play fetch.
These balls are not only super durable (lots of teeth biting), but float in the baby pool we use for our miniature dachshunds.
The value here is much better than you’d find anywhere else. The noise, if bitten hard enough, was “low” at best. Easy to spot/find if overthrown. Will definitely buy again once these are in bad repair; so far, so good-love these for my fur babies!
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Reviewed in the United States on October 8, 2024