- 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
Accepted Payment Methods at Big Jeff Audio
At Big Jeff Audio, we strive to make your shopping experience as smooth as possible by offering a wide variety of payment options. Below is a complete list of the payment methods we accept:
Credit and Debit Cards
- Visa
- Mastercard
- American Express
- Discover
- Diners Club
Digital Wallets
- Amazon Pay
- Apple Pay
- Meta Pay (formerly Facebook Pay)
- Google Pay
- Shop Pay
- PayPal
International Payment Methods
Bank Transfers
Financing Options
We also offer financing options to make purchasing easier. Learn more about our financing options here.
- Klarna
- Affirm
- Sezzle
- Snap
- Acima
- Tiptop
If you have any questions or need assistance with payments, feel free to reach out to us at info@bigjeffaudio.com or call us at 737-BIG-JEFF.
Shipping Options and Delivery Time
Do You Offer Expedited Shipping?
Yes! At checkout, you can select from different shipping options:
- Standard Shipping: Free for orders over $100.
- Expedited Shipping: Available at an additional cost, calculated based on the weight and destination of your order.
How Long Does Delivery Take?
- Handling Time: Most orders are processed and shipped within 1 business day after receiving cleared payment. Occasionally, additional handling time may be required, but we’ll notify you if that’s the case.
- Standard Shipping: Typically takes 3-5 business days, though delivery may be affected by extreme weather or holidays.
What Happens If My Package Is Undeliverable?
If your package is refused or marked undeliverable and returned to us by the carrier, you’ll need to pay the full shipping cost to have the package resent. Alternatively, we can refund your order, minus the cost of shipping.
Why Can’t I Track My Order?
If you're having trouble tracking your order:
- Make sure you’ve received the shipping confirmation email with the tracking number.
- Log into your account on our website and use the “Check Your Order Status” button.
- If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.
