About the huge Lowend boosts
First, the sound of the original tracks matter--AND analog EQ's can be boosted 12db where 3db would do the same on some digital eq's.
2nd, many guys will highpass at 100 and boost a bell at the same place--so there may have been a cut you didnt know about. I dont know...Im just asking if thats possible in this case.
and last, if indeed lowend boosts were actually woofing(Im not talking db's here..I dont care about db's...Im talking actual sound)--then he must be using a sidechain to capture and compress all that lowend separately B4 it goes into the 4k mixbus because otherwise it would be a pumping mess.
So my guess is he is treating his lowend separately and overloading a sidechain, maybe even in parallel too, and then hitting the result to the SSL bus comp. Think of Andy's C4 musing down the woof of the guitars separately. Its really not that novel if thats the case.
Personally, I really dont think he is using any magic techniques. His ear is just so good at spectrum separation, hearing masking, and achieving hi-fidelity broadband sounds, left to right, and front to back, that his turns of the dials are just infinitely more intuitive and productive then ours.
PS...one more thing about the slight delay from the PCM
Someone said its not phase trickery--suggesting those other units suck. Well, those units were created to avoid the phase cancellation caused by delaying one side--so you have it backwards. To be honest I think its all a ruse to throw people off the real technique being used which is Mid-side processing and multed doubles panned to the opposite side to thicken things up. Its really not even that wide --its that its so freakin bright that the sides pop-- because thats where the highs reside when hard panned(bass being further in). That gritty bubbling distortion that you hear more in Wallace mixes can be done with a hundred different units--ts just distortion on top of guitar amp distortion. I think if you analyzed the mixers in question you would be hard pressed to detect, in miliseconds, which side is delayed. My guess is you would find one ahead here and there and then the other ahead.
anyway, he rocks