Same pads as the 77x
Just played it through audio analyzer and there is a main rapid flutter hit at 50-55 (53Hz) I think that rapid flutter is the thing you are liking and there is a lower 33Hz hit that rolls in too.
Let the sz be non eq and slowly raise those 2 zones along with the gain little by little
add some dB to those two spots
little more gain
add some more to those spots till you find the sweet spot/ bump/thump/kick in the head
Thanks, HBB! It's an interesting sound. BTW, for Neutron users: the Gain in the Equalizer screen is not the same as Volume, I just realized I can get output from the S5 close to amp by raising Gain to 17 and then Volume to 93. Now I can listen to Basshead music directly even if I don't have my amp with me (gets bulky to carry around in my pocket at work... and also, the amps I have seem to be quite affected by interference by the cell signal.... usually have to use airplane mode).
In Sz2k news, I am waiting for MR55X pads to arrive to compare massage effect with Alpha pads for myself.... :)