This product is sold by: 1.Built-in Bluetooth for Wireless Music StreamingWorks with All of Your Favorite Devices (Smartphones, Tablets, Computers, MP3 Players, etc.)Dual Channel Amp DesignStereo/Bridged Mode SelectorSpeaker Channel (A/B) SelectorsSpeaker Binding Post TerminalsBridge-Ability Output AmplifierRotary Knob Volume and Balance Controls'Auto On' Function: Automatic System ActivationRCA (L/R) Stereo Line Output Connector Jacks (2) Pair: RCA (L/R) Stereo Line Input Connector JacksConnect External Devices: TV, Computer, MP3 Player, etc.Un-Switched 200 Watt Max AC OutletBuilt-in Circuitry ProtectionIncludes AC Power Cable & Bluetooth AntennaPower On/Off SwitchTechnical Specs:Max Power Output: 240 WattRMS Power Output: 120 Watt x 2 @ 4 OhmBluetooth Version: 4.0Bluetooth Wireless Range: 30' FeetBluetooth Network Name: 'BT-RY'Bluetooth Password: 'BT-RY'Frequency Response: 10-50kHz (+/- 3dB)S/N Ratio: 100dBT.H.D.: 0.1%Stereo Impedance: 4-16OhmBridged Impedance: 8-16OhmVoltage Selector 110/220V, 50/60HzReplaceable Fuse: T4AL (110/120V), T2AL (220/240V) Weight: 9.08 lbs (4.12 kgs)Dimensions (L x W x H): 16.5'' x 8.3'' x 2.4''