I'm not Jeff (but I am a Geoff).
Anywho, here's what Jeff sent me about the channel amps about a month ago:
"The half rack version in the pictures is a discrete pre, and then a discrete Lang/Pultec inspired shelving eq, 2 frequencies per band, and a low cut that cuts out the midrange when combined with boost, as in the pultec. Transformers in and out, eq bypasses the second stage altogether, so basically 2 different configurations. Also a high roll off, and a circuit similar to pre boost in the ID4 that pads the final output and increase the eq amp by the same amount, to put you right in that sweet close to clipping range, and not clip what is down stream.
The Channel strip adds a mid band with boost or cut, and an FET compressor
. Details coming on this and it will be released shortly after the half rack ..."
So, unless things have changed in the interim, that's what we're looking at.
Would love to hear more input from the beta testers.