PA 240 USB / R is a 240 W installation amplifier that includes a USB / SD media player / recorder. It incorporates a 5-input mixer for audio control with independent volume control, Master level control and bass / treble tones, and it is possible to select 4 different audience zones. It incorporates a pre-out terminal to send the mixed signal to an external amplification system or for connecting external devices such as equalizers or processors. It has a 1 W monitor output that allows you to connect a speaker for monitoring purposes. In addition, for maximum safety, it includes a warning on / off switch and a TEL / Emer connection for emergency announcements.