Hifiman HM-801 comes with the replacement power supply (the less heavy one) plus everything that came with it, plus a 32GB Class 4 SD card that works flawlessly with it. It also has the upgraded standard amp module.
Pictures to come, if anyone shows interest.
Looks like the market price for the used HM-801 is higher than used Solo, so I will expect some cash in trade. Not sure if I'll be able to make the trade, so we can talk about cash exchange via PM.