This compressor has a 100us attack, kind of unusual for a compressor. Fast attack is more important than not, maybe this is interesting for us.
http://www.technicalaudio.com/It's in the Langevin folder.
http://www.technicalaudio.com/pdf/Nice people to put this stuff up. I had not seen it before.
The 6ES8 is a TV tuner tube and cheap.