The Furman PL-PLUSII is an advanced power conditioning and distribution unit designed to provide comprehensive AC line protection for professional audio, video, and broadcast systems. It represents a significant step up from basic power strips by integrating Furman's proprietary SMP (Series Multi-Stage Protection) technology. This multi-stage filtration network combines high-current isolation transformers, electromagnetic noise rejection coils, and advanced capacitive filtering to aggressively suppress both common-mode and transverse-mode noise, effectively eliminating the hum, buzz, and interference that can degrade signal clarity in sensitive electronic equipment. The unit's core mission is to deliver clean, stable, and predictable AC power to connected gear such as mixing consoles, power amplifiers, digital processors, and computers.

A central feature of the PL-PLUSII is its illuminated analog voltmeter prominently displayed on the front panel. This meter allows users to continuously monitor the incoming line voltage, providing an immediate visual warning of potentially damaging brownout (under-voltage) or surge (over-voltage) conditions. The unit includes both front-panel and rear-panel AC outlets, all of which are protected. The rear outlets are fully filtered and conditioned, while the two front-panel outlets are typically unfiltered for convenience in powering items like lamp dimmers or device chargers that do not require conditioning. Protection is provided by a high-speed magnetic circuit breaker that offers superior response time compared to thermal breakers, safeguarding against overloads and short circuits.

Housed in a robust, rack-mountable steel chassis, the PL-PLUSII is engineered for reliability in demanding touring and installed environments. While it focuses on extreme noise filtration and voltage monitoring, it does not include voltage regulation or battery backup. Its design prioritizes the preservation of dynamic headroom for power amplifiers, ensuring they receive ample current without restriction. By acting as a centralized, high-fidelity gateway for AC power, the Furman PL-PLUSII systematically removes a primary source of system noise and provides critical voltage awareness, forming an essential foundation for a clean, reliable, and professional-grade equipment installation.