Ultimate Guide to the Crossrock Rack Case

Written By Kiremico Media

When it comes to building a high-performance mobile rig, live sound engineers, gigging musicians, and mobile DJs face a constant battle: finding gear protection that delivers military-grade durability without the back-breaking weight of traditional wooden flight cases. Whether you are staging an outdoor festival or handling a rapid corporate AV load-in, your wireless receivers and IEM transmitters deserve a secure environment. The Crossrock 4U Medium Rack Case (CRA9804U-350S) balances absolute protection and lightweight mobility, checking all the boxes without breaking the bank.

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Crafted with a premium, reinforced dual-layer injection-molded polyethylene (PE) shell, this hardened plastic road enclosure provides exceptional impact resistance. Unlike heavier alternatives, its 8kg (17.6 lbs) empty weight offers reassurance of its robust, structurally stable architecture. Designed specifically to absorb shock and protect delicate front-panel control knobs and buttons from accidental impact, it features heavy-duty corner impact reduction and recessed butterfly latches that won't snag on loose wires during transit. Inside, its heavy-duty steel rack rails are engineered to easily support up to 30–40kg of electronic investments.

+-------------------------------------------------------------------------+
|                  CROSSROCK 4U RACK CASE (CRA9804U-350S)                 |
|                       QUICK SPECIFICATIONS CHART                           |
+-----------------------+-------------------------------------------------+
| Form Factor           | 4U (Standard 19-Inch Rackmount Alignment)        |
| Shell Material        | Heavy-Duty Injection-Molded Polyethylene (PE)   |
| Internal Depth Range  | 9" to 13" (230mm to 330mm) Usable Depth Range   |
| Exterior Dimensions   | 58cm (W) x 41.5cm (D) x 15.5cm (H)              |
| Product Weight        | 8kg Empty / Structural Steel Rails Rated 30-40kg|
| Weather Resistance    | Watertight Seam Design with Heavy-Duty Gaskets  |
+-----------------------+-------------------------------------------------+

What truly sets the CRA9804U-350S apart is its modular ecosystem and meticulous interior layout. The rack features adjustable front and rear sliding rails spanning from 9" to 13" (230mm to 330mm) in depth. This incredible flexibility leaves a clean, intuitive 4.7" (120mm) rear cable management zone. You can cleanly patch your BNC antenna leads, right-angle power cables, and balanced XLR outputs without pressing against the rear wall. It provides a perfect fit for a comprehensive 4-channel wireless configuration—such as four 1U Shure QLXD4/ULXD4 or Sennheiser EW-D/G4 receivers alongside a 1U power conditioner—ensuring your setup stays permanently wired and ready to deploy.

The innovation extends directly to the exterior hardware. The front and back deep-molded lids (~50mm depth) intentionally protrude to create a buffer zone for sensitive knobs while providing full dual-sided accessibility. When you arrive at the gig and pop the lids off, they interlock face-to-face via secure lock ends to transform into a standalone, sealed storage box. This clever design eliminates the need for an extra gear bag, offering a clean, dedicated space to organize your bodypacks, in-ear monitors, adapter connectors, and patch cables right at your workstation.

Furthermore, the case is built around a water-resistant seam design with perimeter gasket seals, safeguarding your active components from sudden rain, outdoor venue spills, or high stage humidity when closed. Its stackable structural grooves allow seamless vertical organization in your van or backstage booth, and the entire unit can grow with your needs. You can easily upgrade it using Crossrock's toolless, detachable metal telescopic trolley handle and rolling wheel kits for smooth suitcase-style transit, or pair it with an internal matching rack drawer. For mobile audio professionals looking to move light and play anywhere, Crossrock delivers complete peace of mind.

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Kiremico Media
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