i had a 16k.v2 ,i have a 16o.v2 on the way ,the k.v2 was awesome ,IMO unmatched in the price range ... $100 ....handled EVERYTHING i gave it ,very smooth ,tight punchy,just plain accurate,got right loud with only 300w...loud enough for my uncle to say "turn that down ...man"....playin 45hz test tone in sealed enclosure (1.9 cubes) i havent heard a idmax , hope this helps ya out