Fellow bass lovers, you need to try these headphones.
These have monstrous bass, I'd say a bass signature like the M-100 has, in part due to the built in Maxim headphone amp built into it. It also has apt-x, bluetooth LE 4.0, hands free calling, nfc, microsd, and it is under $100 here, compared to $179 at Amazon. That's a steal for apt-x headphones.
The internal amp doesn't get used during line in, which is a smart decision. It won't get double amped during dac/amp use.
I don't like being the only one to hear these so far. Someone else needs to try them.