Used Lab Gruppen PLM / PLM+ series

The Lab Gruppen PLM / PLM+ series is a range of professional touring-grade power amplifiers built for large-scale live sound applications. The series features multiple flexible output channels, integrated LAKE digital signal processing, and Dante low-latency digital networking as standard. The PLM+ line builds on the original PLM platform with further enhancements for even greater sustained output power.

Lab Gruppen is a Swedish manufacturer founded in 1979 in Kungsbacka, focused primarily on professional power amplifiers for touring and installed sound. The PLM and PLM+ series represent their touring amplifier platform, incorporating integrated Lake processing and Dante networking. Models within the range scale from the four-channel PLM 10000Q up to higher-output configurations such as the PLM 20K44 SP, intended for the largest live touring rigs.

The PLM 10000Q delivers 2350 W per channel at 2 ohms and 2300 W per channel at 4 ohms, housed in a 2U chassis weighing 13.5 kg (30 lbs). It uses a Class TD output stage and a Regulated Switch Mode Power Supply. Output connectors include binding posts and Neutrik speakON options, and the front panel features a high-brightness LCD display with a moisture-resistant silicone touchpad.

Dante low-latency digital networking is included as standard on PLM series amplifiers, alongside compatibility with the Lake LM 26, Dolby Lake Processor, and other legacy Lake devices. Primary and secondary network connections are provided. The amplifiers also carry a comprehensive loudspeaker preset database, LoadSmart load verification, and SpeakerSafe continuous loudspeaker performance monitoring, making signal routing and speaker management part of the core platform.

When buying a used PLM or PLM+ unit, check which specific model it is, since output power varies considerably across the range. Confirm the channel configuration, whether Lake processing cards are present, and the condition of the speakON connectors and front-panel display. Used pricing reflects model, output spec, age and overall condition. Listings on this page show current availability, and each purchase carries a 21-day warranty covering major functional faults; full details are in the buying guide at https://www.10kused.com/used-av-equipment-guide/.