Bosch PLM-4P125-US Plena Matrix 4-Channel DSP Amplifier, 125W

The PLM-4P125-US Plena Matrix Amplifier is a Bosch 4-channel Class D power amplifier for public address and background music systems. It belongs to Bosch's public address range.

Each of its 4 channels delivers 125 W into 100V, 70V, 8 ohm, or 4 ohm loudspeaker lines, with onboard DSP handling loudspeaker processing so a zone does not need an outboard crossover or limiter. It links to a PLM-8M8 matrix mixer over Amp Link, is set up from a PC GUI or an iOS app, and includes an auto-standby mode that cuts power draw when a zone is idle.