RDL D-HPA3 3.5W Audio Power and Headphone Amplifier, Wall-Mounted with Outputs, White

Optimize on-site audio monitoring with the Radio Design Labs D-HPA3 wall-mounted audio power and headphone amplifier. Built for security, surveillance, intercom and control-room applications, this compact module delivers 3.5 watts of Class D amplification to a 4 or 8 ohm speaker while also providing a front-panel mini-jack for private headphone monitoring. The balanced line-level input (selectable sensitivity) accepts pro audio or unbalanced sources and keeps noise low for clear paging, announcements, and evidence review. Its high-efficiency Class D stage produces negligible heat and runs from a 24 Vdc supply, making it ideal for racks, wall boxes, and constrained environments.

Installation is simple with removable rear terminal connections and recessed switches for input sensitivity and headphone mute behavior, letting you choose whether the speaker mutes when headphones are plugged in. With its unobtrusive white metal face and no illuminated indicators, the D-HPA3 blends into dark rooms and discreet surveillance areas. Add the Radio Design Labs D-HPA3 to your security, monitoring, or AV toolkit for reliable, space-saving audio output—order for installations in control rooms, guard stations, or small PA/interop points.

• Compact wall-mount design saves space and provides a tidy, secure installation for control rooms and monitoring stations
• Dual outputs let you drive a 4/8Ω speaker plus front-panel headphones for flexible local monitoring and private listen modes
• High-efficiency Class D power delivers clear 3.5W audio with minimal heat, improving reliability in 24V systems
• Balanced line input with sensitivity switch ensures clean, low-noise audio integration with pro audio, security, or surveillance systems
• Headphone-sensing mute option automatically silences the speaker when headsets are connected for discreet on-site monitoring