Barely used Astron RS-20 linear power supply. Cosmetics 9+/10. Function 10/10. Note: There is some styrofoam from the original box padding stuck to the power cord which in no way affects its function. Only used indoors in smoke-free, pet-free home. Selling because I need the same thing with 35+ Amp output. Voltage is adjustable internally. I have it set at 13.88V with no load which drops to 13.8V under load. It's adjustable it, but you really need to know what you're doing! Type: Linear, Regulated Continuous Output: 16A at 13.8 VDC Peak Output: 20A at 13.8 VDC Voltage Adjustment Control: Internal Voltage Adjustment Range: 11.0-15.0 VDC High Current Terminal Location: Rear panel Cooling Type: Heat sink Width: 9.000 in. Height: 5.000 in. Depth: 10.500 in. Weight: 18.00 lbs. Notes: Ripple less than 5mv peak to peak (full load and low line). Power supply with attached AC power cord and original box are included. Other items, such as Powerpole adapter and meter, are not included. $85, including CONUS shipping, to my PayPal account buys it. My QRZ email is good.