Hey all. I'm a complete newbie to all this. I recently bought a TPA3116D2 chip on amazon and mounted it in a Hammond chassis to use with my Line 6 Helix into a 112 cab with an 8ohm Celestion. It works great, but is still a little underpowered. I stumbled on to the TDA8954 chip that is bridged for 420W mono. Seems like it fits the bill perfectly. How reliable are these? Also, I see it needs a dual 24V AC power supply. Is that just as easy as getting the proper toroidal TF that meets the specs and also wiring it in an enclosure? Thanks!