I thought about Clamping the 4480.1ds that I have,and the 2680.1d we just put in today,just to see what they actually shell out.Ive never clamped an amp before,so Id have to do some research to do it properly.I haven't heard of anyone clamping any of the VFL Mini Hybrids.Ill say that from experiencing them for myself...They Get down,and are very impressive with power as well as very clean performance.Im sold on them.Great amps.The 26801.d only needs 80 amps of external fusing,as the 4480.1d needs 140,150.4 only needs 60.Hungry?2680.1d?Not in the least..Stock 140amp alt ,Big3 with 0ga run to dual distro,to 4ga to ea amp,and @2ohms dropping from 14.4v-13.6v,on a standard group 78 battery,and 70%gain/0bass boost/and BANGS its azz off on an XFL 10.Everything sounds very loud and very clean/clear.Impressive.