It’s every engineers ongoing battle, gear aquisition syndrome. There are several rooms full of stuff in various states of repair collected (hoarded?) over many decades.
Here’s a list of the some of the bits
Condensers
Neumann U89
AKG 451 (2)
AA 47
AA 49
Tube
ADK Area 51 TT
Advanced Audio CM28 (2)
Dynamic
SM7 (2)
Sm57 (4)
Audio Technica 2035 (3)
Sennheiser 602
Sennheiser 902
Preamps
Neve 1073 (2)
AML 1073
AML 1081 (2)
Amek (10)
Antelope Audio (32)
DI
Avalon U5
Neve (2)
Radial (2)
Converters and other bits
SSL Madi AX
Antelope Audio Orion 32+
Dangerous Goods Source
DBX 160 (2)
Otari mx50
TL Audio Vi1