Detail 01
Transformer-coupled effects loop
The loop is isolated by transformers, so pedal power supplies can't inject ground hum into the console path.
Product detailSKU #1302553613603
Radial EngineeringEXTC 500 Reamp Guitar Effects Interface
1/2
Independent shopping perspective
The Korena take
A 500-series module that sends line signals out to guitar pedals and brings them back. For engineers who want stompboxes usable inside a mixing console.
Strong match
Who this is for
- Running fuzz or analog delay pedals on tracks already recorded
- Reamping DI guitar takes through a pedalboard at mix
- Engineers wanting pedal color on vocals, drums or synths
Consider the trade-offs
When to look elsewhere
- Players with no 500-series frame — there is no standalone power option
- Anyone needing pristine top end on the effected path
- Guitarists who just want pedals in front of an amp live
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Send output at 1.5k ohms, receive input at 10k ohms
Impedances are set to look like a guitar to the pedal, so filters and fuzzes react the way they do onstage.
Detail 03
Wet path 20Hz–10kHz ±3.5dB, −8dB at 20kHz
The effected signal rolls off up top. Expect a darker, more amp-like return than the dry path's full-range response.
Detail 04
Receive gain range −99dB to +9dB
You can null the return entirely or push it hot, so wildly different pedal output levels can be matched without a separate stage.
Detail 05
+25dBu output headroom, +26dBu dry maximum input
Handles hot console levels without clipping, so you can drive it hard and let the pedal do the distorting.
Detail 06
60mA at ±16VDC, rear-panel XLR in and out
Power and the main signal path come from the frame's backplane wiring rather than front-panel patching.
Final check
Know before you order
- 01Needs a 500-series rack or console frame — the module has no power supply
- 02Confirm your frame's per-slot current budget covers 60mA
- 03Pedal noise floor becomes your noise floor; the wet path measures −84dB
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Do I need a 500 series rack for this?
Yes. It draws 60mA at ±16VDC from the frame's backplane and has no independent power input. Main I/O is rear-panel balanced XLR, wired through the frame.
02Can I use it with pedals other than guitar pedals?
Yes. The loop sends and returns at instrument-level impedances, so anything a guitar pedal accepts works — bass pedals, synth-oriented boxes, and studio-grade stompboxes all run through it.
03Will it hum with my pedalboard power supply?
The effects loop is transformer coupled, which breaks the ground path between your pedals and the console. That is the specific problem this design addresses.
04Does it color the sound with nothing in the loop?
The dry path runs 20Hz–20kHz ±1.5dB with −93dB noise and 0.005% THD, so it stays close to neutral. The effected path is darker by design.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
3 detailsSound
- Impedance
- Send 1/4 inch output: 1.5k Ohms; Receive 1/4 inch input: 10K Ohms
- Rear Panel Impedance
- Input: 15k Ohms; Output: 200 Ohms
- Frequency Response
- dry: 20Hz 20kHz ±1.5dB; wet: 20Hz 10kHz ±3.5dB (-8dB @ 20kHz)
1 detailsPickups & controls
- Circuit Type
- Solid state with transformer coupled effects loop
3 detailsConnections & power
- Maximum Input
- dry: +26dBu; wet: +20dBu
- Power Requirement
- 60mA, ±16VDC
- Connector
- Input: Balanced XLR Female; Output: Rear Panel Balanced XLR Male
6 detailsOther
- Thd N
- dry: >0.005% 0dB output; wet: >0.002% 0dB output
- Maximum Gain
- Send 1/4 inch output: ±3dB; Receive 1/4 inch input: +9dB
- Gain Variable
- Send 1/4 inch output: From -14dB +3dB (0dB at center point); Receive 1/4 inch input: From -99dB +9dB (0dB at center point)
- Intermodulation Distortion
- Dry: >0.003% 0dBu input; wet: <0.02% 0dBu input
- Headroom
- Output +25dBu
- Noise
- dry: -93dB; wet: -84dB
