DS18 HYDRO NXL-X850.4D – 4-Channel Marine Amplifier, Waterproof, 4Ω, 250W x4 RMS

DS18 HYDRO NXL-X850.4D — 4-Channel Waterproof Marine Amplifier (IP67, 2400W Peak)

The DS18 HYDRO NXL-X850.4D is a compact, fully waterproof 4-channel Class D amplifier built to be the powerhouse of a marine or off-road system. With an IP67 waterproof rating plus UV, salt, and fog protection, it's made to live in the harshest wet environments — the lake, the trail, anywhere your build gets soaked. The 4-channel layout is great for powering more complex active setups.

Why we recommend it

Real power in a tiny, weatherproof package — up to 300W x4 RMS — with a stable 4-layer PCB, marine-grade OFC tinned wiring, and an included marine fuse holder for full protection against the elements. Selectable HPF/Full/LPF crossovers let you tune it precisely.

Specifications

• Channels: 4 | Max Power: 2400W peak | IP67 waterproof
• RMS @ 4Ω: 200W x4 | RMS @ 2Ω: 300W x4 | Bridged @ 4Ω: 600W x2
• Frequency Response: 10Hz–20kHz | Crossover: HPF/Full/LPF, 40Hz–2kHz
• Power input: 8 GA tinned OFC | Fuse: 2 x 50A (100A) | Voltage: 7–16V
• UV / salt / fog protection | Finish: Black brushed aluminum
• Dimensions: 11.8" x 4.4" x 1.77"