• Ultra compact 4 channel Class D amplifier with built in Bluetooth 5.1 for wireless music streaming without a head unit
• Delivers 70W RMS x4 at 4 ohms, 140W RMS x4 at 2 ohms, or 220W RMS x2 bridged at 4 ohms
• Ideal for motorcycles, powersports, marine, and compact vehicle installs where space is limited
• Selectable HPF, LPF, or full range crossover with automatic switching between Bluetooth and RCA inputs
• Weather resistant brushed aluminum chassis with full protection circuitry for reliable daily performance

DS18 X4BT 4-Channel Class D Full-Range Amplifier with Bluetooth 70W RMS

This Listing Includes:

• (1) DS18 X Series X4BT 4-Channel Ultra Compact Full-Range Amplifier with Bluetooth

The DS18 X4BT from the X Series is an ultra compact 4 channel full range amplifier built for modern audio systems that need clean multi channel power and wireless streaming in a small footprint. With built in Bluetooth 5.1, the X4BT lets you stream music directly from your phone without a head unit, making it perfect for motorcycles, powersports, marine, and compact vehicle installs.

Despite its small size, the X4BT delivers efficient Class D output with low heat and dependable performance. It produces 70 watts RMS per channel at 4 ohms, 140 watts RMS per channel at 2 ohms, or can be bridged to deliver 220 watts RMS per channel at 4 ohms. This makes it ideal for running a full front and rear speaker setup, components, or compact subwoofer configurations.

Selectable crossover modes allow flexible system tuning, while automatic input switching between Bluetooth and RCA keeps everyday use simple. Built with a brushed black aluminum chassis, four layer PCB design, and full protection circuitry, the X4BT is engineered to handle demanding environments where space and reliability matter most.

If you want a compact all in one amplifier that delivers wireless control and clean multi channel power, the DS18 X4BT is a solid upgrade.

Specifications:

• Amplifier Type: 4-Channel Stereo Full Range


• Amplifier Class: Digital Class D


• RMS Power @ 4 Ohm: 4 x 70 Watts


• RMS Power @ 2 Ohm: 4 x 140 Watts


• RMS Power @ 4 Ohm Bridged: 2 x 220 Watts


• Peak Power: 1320 Watts


• Minimum Impedance: 2 Ohm Stereo / 4 Ohm Bridged


• Frequency Response: 20Hz to 20kHz


• Signal to Noise Ratio: 90dB


• Efficiency @ 4 Ohm: 80 Percent


• Damping Factor: 200


• Total Harmonic Distortion: 0.20 Percent


• Low Level Input Range: 0.2 to 5V


• Selectable Crossover: LPF / HPF / Flat


• Crossover Frequency: Fixed 80Hz


• Bluetooth Version: 5.1


• Bluetooth Profile: A2DP 1.3.1


• Bluetooth Range: Up to 60 ft


• Audio Codec: SBC / AAC


• Power Input Terminal: 8 Gauge


• Fuse Rating: 25A


• LED Indicator: Power / Protect


• Protection: Thermal, Overload, Short Circuit, DC Output, Voltage


• Finish: Brushed Black Aluminum


• Weather Resistant: Yes


• Automatic Bluetooth or RCA Input Switching: Yes


• 2 or 4 Channel Input Selector: Yes

Dimensions:

• Overall Length: 5.54 Inches


• Overall Width: 3.24 Inches


• Overall Height: 1.37 Inches


• Heatsink Length: 4.75 Inches