There’s nothing like classroom amplification to make any teacher sound better and louder. Crestron’s MP-AMP40 amplifier is small, lightweight and can save on electricity. The Class D design and doesn’t require a fan, so its whisper quiet. It puts out 40-watts of power and has RCA and mini jack inputs as well as terminal block outputs. It has bass, treble and volume controls and because the MP-AMP40 meets the UL 2043 standard it can be installed behind a wall, in the ceiling or just about anywhere.