Detail 01
Passive
No power supply, no batteries, nothing to fail mid-show. Nothing to plug in and one less thing to troubleshoot.
Product detailSKU #1274228072080
Radial EngineeringJS3 Passive Microphone Splitter Direct Box
Independent shopping perspective
The Korena take
A passive microphone splitter for sending one mic to two destinations — front of house plus a recording rig or second console — without added noise or ground loops.
Strong match
Who this is for
- Splitting a mic between front of house and a live recording rig
- Broadcast or press feeds taken off a podium mic
- Separate monitor and FOH desks sharing the same stage mics
Consider the trade-offs
When to look elsewhere
- One mic into one console — there's nothing to split
- Rigs where every split leg must carry phantom power
- Anyone happy with a Y-cable and unbothered by hum between desks
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
Isolated split
The two consoles stay electrically separate, so a ground problem at one desk doesn't push hum into the other.
Detail 03
Direct box format
A stage-floor box that sits inline at the mic, rather than a rack unit that lives at the patch point.
Detail 04
Phantom power and isolation
Transformers block DC, so phantom reaches the mic from the direct output rather than the isolated feed.
Detail 05
$339.99 per mic
Cost scales per channel, which is where rack-mount splitters start to make more sense for a full band.
Final check
Know before you order
- 01One unit splits one mic; a whole stage means multiplying by channel count.
- 02Decide which console owns phantom power before you patch anything.
- 03Budget extra mic cable — every split doubles the runs coming off stage.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can I just use a Y-cable instead?
You can, but the two consoles then share a ground and load the mic together. That's where hum, level loss, and one desk's problem becoming the other's come from.
02Does phantom power pass to both outputs?
Not through the isolated leg — transformers block DC. Power the mic from the direct output side and run the isolated feed to the second console.
03Does it need power?
No. Passive means transformers do the work, so there's nothing to plug in and nothing to fail during a show.
04How many mics will one handle?
One. Splitting a full band means one unit per channel, which is usually the point where a rack-mount splitter becomes cheaper.
