The LM-845 Premium is a SET integrated amp that uses massive output transformers and a massive separate power supply. The driver tubes are 300B and output tubes are 845. I've upgraded the tubes to Western Electric. The authority, richness and soundstage this amp provides is outstanding. With the Aerial 20T V2 speakers it presents a huge soundstage that is silky smooth and powerful.
The Black Box is a Low Frequency Resonator Array that works in conjunction with the Atmospheres and FEQ X4 to solve bass node issues.
After reading a lot of comments about placement, I decided to put the Tranquility Pod over the very back of the Lumin D2 so that it covers the back-panel connections. I also added some ECTs inside the D2. After a few days, the sound became very, very natural yet even more dynamic. I also added a pure copper grounding cable to the Tranquility Pod which goes directly into the Grounding Block. That did it - the level of realism is startling!