Boss Horn

Boss Horn (stylized BossHorn) is an American brand of portable, battery-powered train horns. The company behind the brand is Horngun Corp., and the brand describes itself as the first to put a portable, remote-operated train horn in customers' hands. Its products are built around a simple idea: take the sound of a train horn, package it into a handheld, pre-assembled device, and power it with the rechargeable battery packs people already own for cordless power tools. No wiring, no compressor installation and no vehicle modification are required — the user inserts a battery, pulls the trigger and the horn blasts. The brand began in 2022, when its founder pursued the question of whether a train horn could be triggered remotely from across a parking lot. The first working units and the bosshorn.com website appeared that year. Between 2022 and 2024 the company focused on tuning the tone and increasing output, and between 2024 and 2025 it developed an in-house control board that manages power modes, three loudness levels, motor overheating protection and battery deep-discharge protection. The board went live in September 2025. Boss Horn's catalog is organized by the battery platform a customer already uses. The company sells versions of its horns built into genuine housings from major cordless tool brands — including DeWalt, Milwaukee, Ryobi, Flex and Worx — while stating that the internal and external horn parts are identical across battery brands, so a Quad is a Quad and a Dual is a Dual regardless of the pack it runs on. The lineup includes the Boss Series (introduced for 2026 and described as the newest and most refined, reworking the older Extreme design), the Extreme Series, the Quad (four trumpets) and the Dual (two trumpets). The company advises against its five-trumpet model, saying the on-board compressor cannot push enough air for all five trumpets. Flagship specifications cited by the brand include up to 150 dB maximum output, a 300 ft standard remote range, an optional 2,000 ft long-range remote, and roughly 200 blasts per charge on a 2Ah battery. Horns are assembled in the USA using genuine tool housings plus custom-engineered components with domestic and imported parts, and are sold with a 1-year warranty and a 90-day money-back offer. Boss Horn positions itself as a novelty and event product rather than a safety device: the horns are marketed for events, gatherings and everyday fun, with a loud, attention-grabbing "train horn they won't forget" pitch. The brand is independent of the tool manufacturers whose battery platforms it uses, and its product pages carry explicit disclaimers that it is not affiliated with Chervon Group (Flex) or Positec Tool Corporation (Worx).

Boss Horn traces its origin to 2021, when its founder kept returning to a single question: what if the raw power of a train horn could be triggered from across a parking lot? That curiosity became the blueprint for a portable horn commanded by remote. In 2022 the earliest working units came to life and bosshorn.com went online; with that launch, the company says BossHorn became the first brand to put a portable, remote-operated train horn in customers' hands. The brand's own account dates its founding to 2022. Between 2022 and 2024 the company concentrated on product refinement rather than expansion. It describes two years of relentless tuning — reshaping the tone, pushing the output and refining the blast until the sound came out noticeably richer and meaner than where it started. This period established the acoustic character that the brand's marketing leans on, including the claim of up to 150 dB maximum output. Between 2024 and 2025 Boss Horn moved into electronics design, creating what it says no competitor offered: a fully in-house control board. The board governs power modes, unlocks three distinct loudness levels, shields the motor from overheating and protects the battery from deep discharge. In September 2025 the board went live in customer units, marking the brand's transition from a mechanical novelty to a product with proprietary electronics. By 2026 the catalog had grown into a family organized around cordless tool battery platforms. The company sells horns built into genuine housings from major tool brands — DeWalt, Milwaukee, Ryobi, Flex and Worx among them — while stating that the horn's internal and external parts are identical across battery brands, so performance does not vary with the pack chosen. The 2026 Boss Series is described as the newest and most refined model, reworking the older Extreme design and fixing its weak spots; the Extreme Series remains in the lineup alongside it. Below those sit the Quad, with four trumpets and a big full sound, and the Dual, which shares the 2026 Boss design and is recommended for customers whose battery brand is not yet covered by the Boss Series. The company explicitly steers buyers away from its five-trumpet model, saying the on-board compressor cannot push enough air for all five trumpets, leaving it thinner and higher-pitched than it should be. Boss Horn products are assembled in the USA using genuine tool housings and custom-engineered components with domestic and imported parts. The horns ship fully built and ready to use, with no assembly and no tools required; the only thing the customer adds is a battery. Standard equipment includes a 300 ft remote control, with an optional 2,000 ft long-range remote for events and large venues, and optional 2Ah batteries and chargers. The brand cites roughly 200 blasts per charge, a 1-year warranty and a 90-day money-back offer. Because the products incorporate housings from third-party tool platforms, product pages carry disclaimers that BossHorn, by Horngun Corp., is independently manufactured and wholly independent of Chervon Group (Flex) and Positec Tool Corporation (Worx), whose trademarks are used solely to identify the incorporated components.

• 2026

  Boss Series is introduced as the newest and most refined model, reworking the Extreme design.

• 2025

  In-house control board is designed, adding power modes, three loudness levels, motor overheat protection and battery deep-discharge protection.

• 2025

  In September the control board goes live in customer units.

• 2024

  Two-year period of tone and output tuning concludes, yielding a richer, meaner blast.

• 2022

  First working units are built and bosshorn.com goes online; the brand says it becomes the first to offer a portable, remote-operated train horn.

• 2022

  BossHorn is founded.

• 2021

  The founder begins exploring the idea of a remotely triggered portable train horn.

Portable, remote-operated train horns that run on the cordless tool batteries customers already own; marketed for events, gatherings and fun rather than as a safety device.

• Boss Series train horn

  2026 flagship series described as the newest and most refined, reworking the older Extreme design and fixing its weak spots.

• Extreme Series train horn

  Older series that sits alongside the Boss Series in the lineup.

• Quad train horn

  Four-trumpet horn with a big full sound; 4× aluminum alloy trumpets sized 1×14", 1×12", 1×8" and 1×5", medium pitch, 140 dB train sound.

• Dual train horn

  Two-trumpet horn sharing the 2026 Boss design; recommended when the customer's battery brand is not covered by the Boss Series.

• Five-trumpet model

  Model the company advises against, saying the on-board compressor cannot push enough air for all five trumpets.

• Long-range remote (2,000 ft)

  Optional pro-grade remote for events and large venues, priced at +$59.

• 2Ah battery and charger

  Optional 20V/24V-compatible battery (200+ blasts per charge) and fast charger, each +$30.

1. 1Boss Horn Train Horns | Loudest Portable Train Horn Guns 150+dbbosshorn.com
2. 2About Us - BossHornbosshorn.com
3. 3Flex Train Horn: Quad Air Horn - BossHornbosshorn.com
4. 4Worx Train Horn: Quad Air Horn - BossHornbosshorn.com
5. 5Boss Hornwikidata.org