Yeah, they made no attempt to put the singles next to each other, which really would have been pretty easy to do. The PSU in the Gilmore Ref is the original tracking design with the OPA548s, so would be better than what is in this. This appears to be a simple LM317/337 PSU.
These guys claim they switched transistors... wonder what they used and if it is an improvement over the Toshiba 2SA1015/2SC1815 used by the original design? Really can't think of many areas to "tweak" one of these designs. Certainly not to the level of "puffery" they allude to. Still, for the price, not bad. Hope the PCB doesn't suck like some "blue" boards I have worked on. Poor copper bonding to the substrate in those.