Henry Kloss - Model Subwoofer Dark Wood Designed and engineered by Henry Kloss and Tom DeVesto. It comes with the power cord - and with the connection cord. (Not sure it’s the original connection cord) In perfect working condition.. It has little patina, and a few minor scratches. Especially on the power knob Please see all photos as they are part of the description. Features Speaker: The Model Subwoofer uses a 5-1/4" bass driver. There is a port opening on the front of the cabinet. Amplifier: A 20-watt internal amplifier drives the subwoofer. No other power or performance specifications are provided. Auto On/Off: When you turn the subwoofer on, it defaults to "Standby" mode. If a signal is detected, it switches to "On." If the subwoofer does not receive a signal for approximately 10 minutes, it will return to "Standby." There is a status LED on the unit's face that glows red in "Standby" mode, and green when it is "On." 12 volt DC Operation: There is a 12 volt jack on the back (12-16VDC, tip positive), allowing you to use a separate DC power supply (not included) for portable use of the unit in cars, campers, etc. Note that it requires 0.8AMP minimum for proper operation. Controls & Connections Front of Cabinet: Auto On/Off: a two position rotary switch used to switch the sub amp from off to current sensing automatic on Level: a rotary knob used to control the subwoofer's volume Power Indicator: an LED which illuminates red when the sub amp is in "Standby" mode, green when it is "On," and does not illuminate when the Auto On/Off switch is set to "Off" Rear of Left Speaker/Tuner Cabinet: AC jack: 120V-60Hz, used to connect the supplied AC cord 12-16 VDC input: allows you to operate this unit from an optional DC Power supply (not included) Input: a 1/8" female stereo mini-jack; one end of the included connecting cable plugs into this jack, and the other plugs into the "SUB" jack on the back of the Model Two or Model Three radio