Here are some photos of the inside of the Hardrock-500
Top Section:
The amplifier deck is sold separately from the rest of the project. Output for ALC and an RF tap for Pure Signal applications can be added. The heatsink is not visible under the heat spreader and is exactly in line with the fans.
Bottom Section:
The power supplied are Meanwell EPP-400 units and are available in various voltages depending on the amp deck. For the AN-1819 we use 18V supplies set to 19.3V to create a 58VDD @ 20A.