Push in up to 100 watts and enjoy the sweet sound of the JBL PROPERFORMER PLUS-Subwoofer and 2 Satellite Speakers. Read some old reviews and message with any questions. Used in good working condition. Selling AS-IS / No returns unless unit has problems other than cosmetic. These are unpowered speakers therefore have no internal amp or volume control. Buyer will receive speakers only exactly as pictured. Power Amplifier and Standard Speaker Wire of the desired length is required to install this system.