• Ultra compact 4 channel Class D amplifier with built in Bluetooth 5.1 for wireless audio streaming
• Delivers 100W RMS x4 at 4 ohms, 150W RMS x4 at 2 ohms, or 300W RMS x2 bridged
• IP67 waterproof aluminum chassis designed for marine, powersports, and outdoor installs
• Selectable HPF, LPF, or full range crossover adjustable from 40 to 500Hz
• High efficiency digital design with full protection circuitry for reliable performance

DS18 600W RMS 4-Ch Ultra-Compact Waterproof Bluetooth 5.1 Amplifier NXL-N4BT

This Listing Includes:

• (1) DS18 NXL-N4BT Ultra-Compact 4-Channel Full-Range Amplifier with Bluetooth 5.1

The DS18 NXL-N4BT is an ultra-compact, high-output 4-channel full-range amplifier designed for marine, powersports, and space-limited vehicle installations. Built with a sealed IP67 waterproof aluminum chassis, this amplifier delivers powerful, clean audio while withstanding harsh environments, moisture, dust, and vibration.

Featuring built-in Bluetooth 5.1, the NXL-N4BT allows you to stream music wirelessly directly from your smartphone or device without the need for a head unit. With support for SBC and AAC codecs, 24-bit audio depth, and a 48kHz sample rate, it delivers clean signal and reliable wireless performance.

Despite its compact size, the NXL-N4BT delivers up to 1800 watts peak power with strong full-range output. It produces 100 watts RMS per channel at 4 ohms, 150 watts RMS per channel at 2 ohms, or can be bridged to deliver 300 watts RMS per channel at 4 ohms. This makes it ideal for powering mids, highs, components, coaxials, or flexible multi-speaker setups.

Built-in selectable crossovers allow precise system tuning with HPF, LPF, or full-range modes adjustable from 40 to 500Hz. The digital Class D design based on the IR platform ensures high efficiency, low heat, and reliable performance.

With its compact footprint measuring under 8 inches long and less than 1.6 inches tall, the NXL-N4BT installs easily under seats, inside glove boxes, side panels, or tight marine compartments. Full protection circuitry including thermal, overload, and short-circuit protection ensures safe operation in demanding conditions.

Specifications:

General:

• Manufacturer: DS18


• Model: NXL-N4BT


• Amplifier Class: Digital Class D


• Amplifier Type: Stereo Full Range


• Number of Channels: 4


• Peak Power: 1800 Watts

Power Output:

• RMS Power @ 4 Ohm: 4 x 100W


• RMS Power @ 2 Ohm: 4 x 150W


• RMS Power @ 4 Ohm Bridged: 2 x 300W


• Minimum Impedance: 2 Ohm Stereo / 4 Ohm Bridged

Audio Performance:

• Frequency Response: 20Hz – 20kHz


• Signal to Noise Ratio: 90dB


• Total Harmonic Distortion: 0.1 Percent


• Low Level Input Range: 200mV – 5V


• Selectable Crossover: HPF / LPF / Full


• Crossover Range: 40 – 500Hz

Bluetooth:

• Bluetooth Version: 5.1


• Bluetooth Name: DS18 NXL-N4BT


• Audio Protocol: A2DP 1.3.1


• Audio Codecs: SBC / AAC


• Audio Depth: 24-bit


• Sample Rate: 48kHz

Electrical & Protection:

• Power Input: 8 Gauge OFC


• Fuse Rating: 25A


• LED Indicators: Power / Protection


• Thermal Protection: Yes


• Overload Protection: Yes

Construction:

• Chassis: Fully Aluminum


• Waterproof Rating: IP67

Dimensions & Weight:

• Overall Length: 7.87 inches


• Overall Width: 3.67 inches


• Overall Height: 1.56 inches


• Heatsink Length: 7.16 inches


• Unit Weight: 2.8 lbs