I ordered a headunit off ebay. It says it has LO/DX Controls. What are these and can u explain a little more. And how good are cyclone headunit. I just wanted somethin 2 play cd's with. Can u explain more if they are good or not. I only paid like 25. its Cyclone 160 Watt AM/FM Receiver CD Player w/Detachable Face Part #CCD18. thanks