Sorry that there are already a couple threads on this out there on this. My specifics are: I need a headphone amp that is good and has a line in for a cd player. I will be using my stingray and maybe jazz to jam along to rock and melodic post-punk cds. I want a good bottom end and coloration isn't a huge deal for me since I play through Ampeg. I already have an uber-nice pair of Sennheiser HD-25 dj headphones as well as a $200 headphone amp (not for bass just for headphones) from Headroom. What bass headphone amp should I get?