I'm pretty tired of going through 2.5 sets of 6 C batteries per weekend. I like having 75 or so CDs on hand to have a nice ambience to my campsite, and every so often I have to remove, dispose, and reload the battery supply. And when's the last time you saw a decent D battery CD player that was compact in size? Recently we bought the Wagan 400W Power Dome, $ 65.99, at Costco. After a 36-hour charge I packed it into the car and headed for the ABATE 13th Regional Rally at Lake ElSinore. The rear-mounted inverter has two AC outlets and the plug fit right it. I put the 'Dome on a bit of newspaper to keep the dustoff and placed the Sony CD player on the Roll-A-Table and cut loose. We played many-a-disc Friday day, night, Saturday and Saturday night and it wasn't until 12:41 AM Sunday morning that the power finally was insufficient to run a CD. After a 10-minute break, I had enough power back for about four disc cuts and again lost power. I still had enough power to run the 5-LED lamp on front if wanted and even recharged my cell phone on the front-mounted DC outputs. Sunday pack-up meant several more discs that I ran on the old C batteries, still in the player from out last trip in '06. I'm pleased with the performance and power this device provided. I suppose someday I'll use the built-in compressor and maybe even the battery booster - it would sure beat the usual car-to-car jump start. Two Thumbs Up!