Marshall Audio Stanmore Bluetooth Speaker System (Black) Part Number: 04090107 Type: PA Speakers Specification: TECHNICAL INFORMATION MAINS INPUT VOLTAGE: 100-240V-/200W ABSOLUTE MIN/MAX: 90-264V- MAINS FREQUENCY: 50-60Hz TWO STANDBY MODES: POWERSAVER MODE (0,43) AND STANDARD MODE (8,7W) CONNECTIVITY BLUETOOTH: STANDARD V4.0 + EDR APTX CODEC SOUND SPECIFICATION CLASS D AMPLIFIER: 2X20W+1X40W 3/4 DOME TWEETERS: 2X 5 1/4 WOOFER: 1X BASS AND TREBLE TONE CONTROLS FREQUENCY RESPONSE: 45- 22.000Hz +-3DB Inputs: 3.55 MM: 1X RCA: 1X OPTICAL INPUT: 1X Frequency Response: 2500Hz Dimension: 7.28 x 7.28 x 13.78 (H x W x D) Weight: 11.24 lbs.