SONAR delivers a narrow beam of audible sound to a single target — inaudible to anyone outside it. Built for magicians and mentalists who need words, voices, or cues to land on one mind without a speaker, an earpiece, or a trace.
Start with the trailer. Then watch two unedited clips from real rooms — one PK effect, one field test.
Founding pricing closes when pre-orders close on May 31. Every unit is numbered and built to order.
Every component of the SONAR performance system. Each module sold individually or as a set.

SONAR x6
Close-up module. Handle-form EVP. Sleeve-concealable.

SONAR x13
Parlour module. 13-unit compact array. Jacket-pocket fit.

SONAR x61
Stage & street module. Dual-angle modular head.

xHost
Central controller. Routes audio to any module.

xR Remote
Concealed trigger. Runs cues from pocket or palm.

Travel Case
Military-grade case. Holds every module in one kit.
Three signature effects you can perform the day your SONAR arrives. Each one designed around a different module and a different emotional beat — and a foundation to build your own.
A voice — their voice, or a voice they shouldn't know — speaks from a sealed object only they can hear. The rest of the room sits in silence, waiting.
Subliminal cues delivered directly into one spectator's ear while the performer stays silent. Choices they think are free are quietly being shaped.
One audience member starts hearing a tone, a whisper, a name — slowly at first, then clearly. They're the only one. They'll never forget it.
Every SONAR module is tuned for a specific performance context. Here's what you can expect from each.
Close-up module. Handle-form EVP. Sleeve-concealable. Optimized for EVP-style signal capture beyond normal audible perception. In very quiet environments, output may become faintly audible.
Parlour module. 13-unit compact array. Fits inside a jacket pocket. Designed for clear audible perception by the human ear. Downward compatible with subtle signal applications.
Stage & street module. Dual-angle modular head. Maximum output with full-spectrum capability. Strongest balance of range, mobility, and performance.
Billy Chin
Founder & Lead Engineer, HIDDEN DOOR
"SONAR was born from a simple frustration: the tools we needed as performers didn't exist. So I built them. Every unit that leaves our workshop is something I'd hand to a fellow magician without hesitation — because I know what's at stake when you step on stage."
Questions? Reach us at support@sonar.hiddendoor.tech
If your question isn't answered here, email directly at support@sonar.hiddendoor.tech. Every message gets read.
When will my unit ship?
All units are in stock. Orders ship within 3–5 business days. Delivery times vary by destination — you'll see an estimated date at checkout based on your country.
Why is the early-access price lower than retail?
We sell direct to performers — no retail markup, no middlemen. The price you see is the best price you'll ever get for a hand-assembled, individually numbered SONAR unit.
How do I track my order?
Once your order ships, we'll email you the carrier tracking number directly. You can track your package in real time using that number on the carrier's official website.
What is your return policy?
If your unit arrives with a manufacturing defect, we'll replace it at no cost. For all other returns, the unit must be unused and in original packaging. Return shipping is at your expense, and a 15% restocking fee applies. Please contact support@sonar.hiddendoor.tech to initiate a return.
Is this a prototype or a production unit?
Production. SONAR has been in field testing with working magicians and mentalists for months. You'll receive the same hardware, in the same configuration, that the performers in the demo clips use.
Who is Hidden Door?
Hidden Door is the team behind SONAR, led by Billy Chin. Every unit is designed, engineered, and hand-assembled by Hidden Door — from PCB to final QC. Support: support@sonar.hiddendoor.tech
In stock. Ships within 3 business days. Worldwide delivery available.