Wow, didn't realize the lowest models were still carbon. Nice touch that they still call it an ultralight frame: "Ultralight 300 Series OCLV Carbon, ride-tuned performance tube optimization, E2, BB86.5, 3S chain keeper, DuoTrap compatible"
What do you think about cutting holes in the top plate for the 10m90s heatsinks as well as the tubes and populating everything else on the board on the bottom side, then putting the PS on the bottom but making sure the pass FET sinks aren't directly underneath the amp boards?