Pyle Bluetooth Tube Amplifier Stereo Receiver-500W Home Theater Audio Desktop Stereo Vacuum Tube Hi-Fi Power Amplifier Receiver w/ 4 Vacuum Tubes, USB Reader, CD/DVD Input, Subwoofer Output - PVTA80 open box, comes as show in the photos in its original box, 4 VACUUM TUBES: The Pyle Vacuum Tube Hi-Fi Amplifier is perfect for your home entertainment system. Gives you 500W peak power w/ 4 vacuum tubes. Proven to sound better than regular amplifiers because of the euphonic distortions they add to the music 3 INPUTS: The digital amp box supports MP3 audio playback & other external devices. It is equipped w/ built-in USB reader and two CD/DVD inputs. It is also equipped w/ one subwoofer output and 2 speaker outputs which can support 4-8 ohm speakers BLUETOOTH-COMPATIBLE: The professional integrated indoor house stereo receiver is equipped w/ bluetooth wireless music streaming. Works w/ today’s latest devices including smartphones, tablets, laptops and computers with hassle-free receiver pairing TOP PANEL CONTROL: The sound speaker amplifying device features top panel controls w/ input select, play/pause, previous/next song, master volume knob & USB w/ the LED display screen on the front. The 4 vacuum tubes are also located on the top panel BUILT-IN COOLING FAN: The high powered home theater pro audio receiver features a built-in cooling fan to prevent overheating. Additional feature includes a double-sided fiber circuit board. Includes remote control and power cable