RDL HD-PA35A HD Series 35W High Efficiency Power Amplifier with Power Supply

Deliver clear, reliable audio to paging, security and monitoring zones with the Radio Design Labs HD-PA35A pro amplifier. Engineered as a compact, high-efficiency solution, the HD-PA35A provides 35W of Class D power with selectable 25/70/100V constant-voltage outputs to cover multiple zones without extra transformers. Its built-in analog compressor/limiter prevents output clipping and increases usable average power while preserving audio dynamics—ideal for surveillance voice announcements, access control paging, and background music in security-sensitive environments.

Installation is straightforward: front-panel input gain plus remote VCA or standard 0–10 V/10 kΩ control options enable precise level integration with RDL or OEM mixers. The amplifier runs cool under load, includes thermal and short-circuit protection, and ships with the requisite 24 VDC power supply for quick deployment. Designed and manufactured in the U.S.A., the HD-PA35A is a dependable choice for AV integrators and security professionals who need compact, high-fidelity amplification for monitoring, surveillance and public-address systems. Specify the HD-PA35A for your next security or AV project and streamline multi-zone audio deployment.

• Deliver consistent coverage with 35W Class D efficiency and selectable 25/70/100V constant-voltage outputs for multi-zone paging and security audio.
• Maintain speech and music clarity with an analog compressor/limiter that prevents clipping while preserving dynamic range for surveillance and monitoring applications.
• Flexible level control via front-panel gain, VCA/0–10 VDC control and optional remote adjustments to integrate with existing security and AV systems.
• Compact, low-heat U.S.-made design with thermal and short-circuit protection for reliable operation in racks, remote closets, and distributed systems.
• Includes external 24 VDC power supply and a 3-year limited warranty for dependable, low-maintenance installations.