I've got a 9886 and a Sundown SAE-1000D... I set my gains to 30/35, so that anything after 30 will start to distort a little.
That being said, My gain is under 1/2 and it POUNDS the crap out of my old L5 (also wired to 2ohms at the amp)... No bass boost at all.
Maybe its a faulty HU and the...