bought two mkii, 3 month's ago

one is still is in its box for back up

i dont really use the 25v/70v

i have three 8 ohm 300rms 15inch speakers, and two 8ohm 150rms 10inch speakers
all are ran to a single 2 gauge wire into the com ground and 4ohm terminal

most amps than i have used will cook them self trying to work with a .5 ohm load
and these mkii have not failed or over heated

they make a sound so crisp and clear even with a load below 1 ohm

my longest gig last 35 hours and at full peak power the amp never over heated and never when into protection even when heavy deep bass would hit.

soon will be taking the sec and be bridging the mkii's to gether and adding another seven 15's and four 10's

i highly recommend mkii
only problem with the mkii is the weight 25lbs