UPDATE - I kept monitoring it and the top side gets a bit warm, specially on the left side (as stated in the first post). However, the underside, specially the left side, towards the back), gets noticeably warm after about 30 minutes of play, and pretty much stays like that (the whole underside seems warm, after a while, but that general area where the power source and DSP chips are gets the warmest. It is not painful to the touch, but pretty warm - like a laptop charger. Is that within specs? Anyone else experiencing that?