The problem arrives with a buzzing sound—sometimes. By the time you hear the seven-inch FPV suicide drone, you have perhaps five seconds before impact. Maybe less. Traditional radar gives you away. RF jamming works until the other side switches to fiber-optic cable or pre-programmed flight paths. Soldiers in Ukraine have taken to listening for the insects-on-amphetamines hum of quadcopter motors, then trying to shoot them down with rifles. It works occasionally. Not often enough.
Austin-based 9 Mothers Corporation thinks it has a better answer, and it's now shipping that answer—a compact, AI-powered counter-drone turret called EDDA—to U.S. government customers and defense contractors. The system represents a sharp, specific wager: that the future of close-range drone defense belongs to platforms that can stay silent, react fast, and kill cheap.
EDDA weighs roughly 23 kilograms, occupies about half a cubic meter, and is built around an idea that sounds almost quaint in an era of electromagnetic warfare: listening. The turret uses passive acoustic detection to pick up the intrinsic sound signature of small drones, cues a visual tracking model, and engages with a shotgun at 10 to 100 meters. No radar broadcast. No radio signature. Just microphones, cameras, and pellets.
A LinkedIn post by the founder in late May confirmed what defense industry observers had been hearing through backchannels: EDDA is shipping. That puts the system roughly a year past its first prototype and into the hands of customers the company describes, with characteristic vagueness, as "U.S. Government and its prime contractors." According to the startup's Y Combinator profile, it already has multiple contracts locked.
The Quiet Approach
The technical architecture hinges on staying off the electromagnetic spectrum for as long as possible. What 9 Mothers calls "zero RF emission" detection means the turret doesn't announce itself with radar pulses or radio chatter that could pinpoint a defender's position—an important consideration when you're trying to protect a forward operating base or convoy from an adversary who also has drones, and who will absolutely target your air defense nodes first.
Instead, EDDA begins with coarse acoustic cueing. Microphones pick up motor and propeller noise. The system's algorithms distinguish drone acoustics from ambient sound—vehicle engines, wind, voices—and alert the visual model. That model takes over for fine tracking, handling occlusions when drones dip behind buildings or terrain. There's an optional active radar mode for operators who want it, but the default posture is signature-quiet.
The engagement mechanism pairs an ultra-fast motion platform with a shotgun effector tailored for the threat profile: seven-inch FPV drones, the nimble, cheap platforms proliferating across modern battlefields. The company claims the turret executes a 5-degree step in under 15 milliseconds and maintains tracking accuracy below 1.5 arcminutes. Those are aggressive specs. Whether they hold up under field conditions—dust, vibration, electromagnetic interference—is the sort of detail typically locked behind operational testing reports and classified assessments.
9 Mothers distributes a more detailed technical brief, but only under NDA to qualified operators and procurement teams. That's standard practice in this corner of the defense world, where product details can reveal tactical vulnerabilities.
An Urgent Market
Perhaps more than the founders expected when they started the company in 2024, timing has worked in their favor. Not because anyone wanted this problem to get worse, but because it has.
A February study by the French Institute of International Relations discussed drones accounting for up to 60 to 80 percent of combat losses in Ukraine, reflecting their significant battlefield impact. A Reuters dispatch from the same month described the battlefield as "drone-dominated." As of June 2025, the U.N. human rights office tallied at least 395 civilians killed and 2,635 injured by short-range drones in Ukraine between February 2022 and April 2025. These aren't the large, expensive Predators or Reapers of earlier conflicts. They're small, often Chinese-made commercial quadcopters refitted with explosives, or purpose-built FPV kamikaze platforms. Some are autonomous. Some fly on fiber-optic tethers. Many are simply pre-programmed, which renders traditional RF jamming useless.
The U.S. military, watching carefully, has moved with unusual speed. In January, the Army's C5ISR center issued a request for information explicitly seeking acoustic detection systems for small drones. That RFI aligns closely—almost suspiciously so—with EDDA's passive-first architecture. An article in AFCEA's SIGNAL magazine last month noted that the U.S. counter-drone task force is fielding initial solutions for Group 1 through Group 3 threats, with particular urgency around the smallest, most difficult category.
In short: the need is real, the procurement pipelines are open, and 9 Mothers has hardware ready.
A Crowded Sky
The counter-drone space has gotten noisy, in more ways than one.
Beretta—yes, that Beretta—unveiled its LIVET turret around the same time EDDA began shipping. LIVET mounts eight Benelli shotguns for high-volume pellet clouds. Australia's EOS has been demonstrating Slinger, a 30x113mm remote weapon system with radar and electro-optics aimed at longer ranges. DroneShield, an Australian firm that's become something of a household name in defense circles, focuses on RF jamming and sensor fusion but generally avoids kinetic hard-kill.
ZeroMark, backed by Andreessen Horowitz, offers AI targeting layers for rifles and turret-mounted systems, though its approach doesn't lead with passive acoustic. Fortem Technologies uses interceptor drones with net capture—a non-lethal option that requires airspace for launch and recovery, which makes it less viable in dense urban terrain.
What sets EDDA apart—at least on paper and in pitch decks—is the combination: passive acoustic cueing, light weight, autonomous-capable hard-kill at very short range, and a design envelope that accommodates cluttered environments. It's explicitly built for the scenarios where larger, more complex systems struggle and RF jamming fails against wired or pre-programmed threats.
Whether that differentiation holds up in the field, or whether competitors close the gap, remains an open question. Defense procurement moves in cycles. Right now, the cycle favors anyone who can ship a working counter-drone system. A year from now, the bar may be higher.
From Software QA to Shotgun Turrets
The founding team brings backgrounds spanning software and technical domains. Russell Smith previously founded Rainforest QA, a Y Combinator-backed software testing startup from the summer 2012 batch. His co-founders, Roman Khomenko and Bogdan Pyzh, bring technical depth. The company joined Y Combinator's Spring 2026 batch and has since grown to 18 people, according to its YC profile. Hiring continues across machine learning, computer vision, robotics, acoustics, and embedded systems—the full stack required to turn acoustic signatures and visual feeds into lethal targeting decisions.
The investor roster includes RSquared VC and Y Combinator itself. A compilation by Black Flag VC also lists Pioneer Fund and Mana Ventures as investors, though independent confirmation from these firms' portfolio pages is not publicly available. (Not unusual for defense-related investments, which sometimes stay quiet for regulatory or strategic reasons.)
9 Mothers holds ITAR registration and the necessary government vendor identifiers—CAGE code 11NF2, DUNS 14-483-9928—the bureaucratic infrastructure required to sell directly to the U.S. military. That's table stakes, but it also means the company navigated the compliance gauntlet quickly.
The product roadmap leans into Norse mythology. EDDA is the first system reaching customers. Internal references suggest follow-on products named Vor, Atla, and Gleipnir are in development, though details remain locked under NDA. Whether those names hint at functional differences—longer range, different effectors, networked operations—or simply reflect the founders' taste in branding is unclear.
The Unsentimental Calculus
There's something almost unsentimental about the whole approach. This isn't a moonshot pitch about transforming global security architecture or a grand vision for autonomous warfare. It's a direct response to a visible, urgent problem: small drones are killing people at close range, and traditional defenses are too slow, too expensive, or too noisy.
EDDA's answer is straightforward. A compact turret. Passive listening. Shotgun engagement. Sit quietly until a threat gets close, then engage fast. The system isn't trying to intercept cruise missiles or track high-altitude ISR platforms. It's designed for the messy, cluttered, close-in fights where soldiers are already resorting to small arms fire and desperate improvisation.
Whether EDDA scales beyond early government customers depends on performance data that remains, for now, under wraps. Field reports will trickle out slowly, if at all. Procurement decisions will hinge on classified assessments, competitive evaluations, and the brutal arithmetic of cost per kill versus cost per drone.
But the company is shipping. Hardware is moving. Contracts are signed. In a market shaped by urgent need and validated by cash outlays from government buyers, 9 Mothers has cleared the first hurdle. The harder tests—reliability, scalability, battlefield effectiveness—lie ahead.
For now, though, the buzzing is getting louder, and someone is finally listening.
