I currently am selling HP PC server supplies setup for dc usage. The supplies are set at 12.3 Volts and on 120v they will do roughly 75 Amps per device. There is more info on them and how to get them to 15 volts. These supplies are great for radios and small amplifiers and anything else that runs on DC. The Price is 40$ Shipped to the Lower 48. I will have a paypal Button up here soon to purchase right from the site. Fill the form out and I will get back to you.