DS18 NXL-N4BT NXL 4-Channel Full-Range Class D Nano Amplifier – IP67 Waterproof Marine & Powersports with Built-In Bluetooth 5.1 Receiver – 1800W Peak

Looking for more volume without distortion? The DS18 NXL-N4BT 4-channel amplifier puts out 1,800W peak.

At a glance

• Power: 1,800W peak
• Channels: 4
• Class D

Details

The DS18 NXL-N4BT amplifier is an ultra-compact IPX67 waterproof 4-channel full-range amplifier with built-in Bluetooth 5.1, designed for marine and powersports systems needing clean power and wireless control.

It delivers up to 1800W peak power with 4 x 100W RMS @ 4Ω, 4 x 150W RMS @ 2Ω, and 2 x 300W RMS bridged @ 4Ω, making it flexible for mids, highs, or compact custom setups. Bluetooth 5.1 provides stable, high-quality wireless streaming with low signal loss.

Built-in crossover control (HPF/LPF/full range, 40–500Hz) allows precise tuning for different speaker setups. Its 7.87” compact design fits tight spaces, while full protection circuitry ensures reliable performance in marine, off-road, and harsh environments.

Features:

• Built-In Bluetooth Receiver – Stream your favorite music wirelessly straight from your smartphone
• Ultra-Compact Size for Easy Installation
• Fully Aluminum Chassis Design
• IP67 Waterproof Rating
• Latest Full-Range Digital Design Based on IR Platform

Specifications:

General Specs

SKU
NXL-N4BT
Total Watts (Peak)
1800W
RMS Power @ 4 ohm
4 x 100W
RMS Power @ 2 ohm
4 x 150W
RMS Power @ 4 ohm Bridge
2 x 300W

Audio

Frequency Response
20Hz-20KHz
Signal to Noise Ratio 1W @ 4Ω
90dB
Total Harmonic Distortion (THD)
0.1%
Low Level Input Range
200mV-5V
Selectable X-Over
HPF/LPF/FULL
X-Over Filter Range
40-500Hz
Bass Boost Range
No
Infrasonic Filter
No

Bt Specs

Bluetooth Name
DS18 NXL-N4BT
Version
5.1
Services
Audio Stream
Audio Protocols
A2DP1.3.1
Audio Codec Supported
SBC / AAC
Sample Rate
48k/bit
Bitrate
SBC 328kbps / AAC 576kbps
Bitrate Depth
24bits
Range
20Hz - 20kHz

Features

Amplifier Class
Digital
Amplifier Type
Stereo Full Range
Number of Channels
1
Minimum Impedance
2 Ohms (Stereo / 4 Ohms Bridge)
LED Indicator
Power / Protection
Power Input Size
Wired 8Ga OFC
Fuse Size
25A
Thermal Protection
Yes
Overload Protection
Yes
Waterproof Rating
IP67

Measurements

Overall Length
7.87" / 200mm
Overall Wide
3.67" / 93.4mm
Overall Height
1.56" / 39.8mm
Heatsink Length
7.16" / 182mm
Gross Single Unit Weight
2.8Lb / 1.3Kg

UPC: 810199440392

Why buy from Stereo-Needs

• Free shipping on every order
• Family business with 20+ years selling car audio and 429,000+ items sold on eBay (99.9% positive)
• Not sure it fits your vehicle or system? Call or text 951-497-3497 before you order