Save money, time and space with plenum-rated audio amplifier. Laboratory tested and verified, this unit can be installed directly in plenum air space without enclosing it in separate plenum-safe box. Minimal size and weight allow for easy installation virtually anywhere. With simple design and 40W RMS at 4 Ohms output, stereo amplifier provides excellent sound reinforcement in classrooms, conference rooms, training centers, offices, restaurants and other settings. Dual inputs (RCA stereo audio, 3.5mm stereo audio) have separate gain control, ensuring appropriate volume for each connected device. Amplifier employs quick-connect phoenix connector for power and speakers, and also has short circuit protection.