Yes, j, those were both introduced with
the Rumble 800 HD head just 3 years ago. ... ... uh, ... wait a minute ... I tell a lie .... ...
The Speakon connector was introduced with
the Rumble Stage 800 combo 4 years ago! But, the Stage didn't need a pre/post switch because it has both Pre- and Post- XLR Outputs (by default, but can be configured to
STEREO left & right)
Then came the
HD adding the much called for pre/post switch
with the Speakons 3 years ago.
Man! These 3 different Rumble 800s can be confusing!

? ... but exciting!!!
.