Not really looking for alternatives per say, just trying to see if the sub could be wired to 1 ohm on this amp. I have budgeted for both of these along with the other amp and comps I am looking at ($2200 plus install). Through research I have decided definitely on DLS amps and comps(Iridium 6.2 on a bridged A4) and am leaning toward the TC-3000 for that A6(the other contender is the Fi Q but it's fading fast). My goal? Very good sound quality with respectable output. The sub will be sealed in a recommended enclosure.