Have you seen/used any of this gear before?

Gaumont-Kalee limiting amplifier type 516

I came across this Youtube clip of some very unique pieces. I would really like to hear from anyone who owns or has access to any of the gear featured here. The pieces that immediately caught my eye are the Gaumont-Kalee limiting amplifier (see pic above),

The Philips LDC compressor,

Philips LDC compressor (bigger)

and the Sela PT8 tube mic.

Sela PT8 tube mic w/ Neumann M7 capsule

Here's the clip:

Gear featured in video:

Phiilps LDC25 discrete console
Philips LDC compressor (smaller)
Philips LDC filter
Philips LDC parametric equalizer
WSW tube limiter
Maihak W49 filter
Gaumont-Kalee limiting amplifier type 516
Philips LDC compressor (bigger)
Sela PT8 tube mic w/ Neumann M7 capsule
Philips MD8RF console with passive equalizers