DEFENDER Z4 wired 2.1 speakers, 11 W RMS, black, USB 5V power, 3.5 mm headphone out

The DEFENDER Speakers Z4 Black Wired 11 W are a compact 2.1-channel speaker system for PC use, offering a combined RMS rated power of 11 W and a frequency response of 50–20000 Hz. The wired connection delivers stable audio, and the black finish integrates easily into a desktop setup. The system includes a rear phase inverter and a power indicator for easy monitoring.

Advantages

Compact size saves desk space while providing full-range sound for everyday multimedia and gaming. USB-powered operation eliminates the need for an external power adapter. On-unit volume and bass controls allow quick adjustment without opening software. Wired connectivity ensures consistent signal transmission and minimal latency.

Suitable for

• Desktop PCs and laptops with a wired audio output
• Everyday music playback and video streaming
• Casual gaming and voice calls
• Workspaces with limited desk space

Key specifications

• Audio output channels: 2.1
• RMS rated power: 11 W
• Frequency response: 50–20000 Hz
• Connectivity: Wired (USB power)
• Colour: Black
• Weight: 0.7 kg

How to use

Connect the speakers to your PC or laptop audio output and plug the USB cable into a USB port for power. Use the on-unit volume and bass controls to set the desired sound level and low-frequency balance. Place the satellite speakers on either side of your monitor and position the subwoofer with the rear phase inverter accessible for any necessary phase adjustments.

Recommendations

For best results, position the speakers at ear level and keep the subwoofer on a stable surface. Reduce interference by keeping the speaker cables away from large power cables and wireless transmitters.