Jetstream JTPS14BCM. This is a 13.8VDC power supply rated at 12A continuous, 14A surge. It has extra terminals on the back for a backup battery, and it will trickle charge that battery. There's a front-panel knob to adjust voltage from approx 11 to 15V. Has both voltage and current meters on the front, both are illuminated. When the cooling fan turns on, it's pretty quiet, but you have to draw a few amps before it comes on. All terminals are banana jacks and are on the rear.
Note: This unit one time, when I turned it on, came up to only 3.5 volts, and the front-panel knob did not adjust it. It has worked every other time. I don't know if I had a too-heavy load connected or not. I called Jetstream, and they claimed this is not a known problem.
$45 shipped anywhere in the US, and I'll include a power cord with it.