Hi guys, Firstly, YES THE FAN IS ON..., no it's not in a road case, and no it's not the stage lights..... I'm just wanting to know from EXPERIENCED TFB550 owners about how hot your amp gets. Mine seems to get too hot to touch more on the bottom than the top, and more on the end furthest from the fan. Propping it up 2 inches for more air flow helps a bit but still get hot enough to make me concerned. I leave it on during breaks for fan to cool it down which only takes about 5 minutes. In the TF Owners Manual it states TFB550 "can handle as much heat as it generates as long as the load is kept to a 4-Ohm minimum". Running 240V (Australia), Gold chip upgrade, Mute switch installed by TF Authorised Repairer. I'm currently gigging with TC Electronic RS212 and RS210 vertical stack, supposedly 8ohms each = 4 ohm total load. I'm told these aren't fully 8ohms and suspect this might be the root cause, though it still gets hot running only one cab..... !?! Gigs are quite loud and use Hearos earplugs. Preamp volume on 5 (very little clipping) and master volume also around 5. Playing Tobias (mostly in active) and P-Bass at gigs. I've thought about placing it on top of an aluminium heat sink, upgrading the internal fan or adding an external fan to cool it but wanting advice on best options.