Jmur...
I keep thinking of what you'd said about the last recording sounding better through your "cans" in reference to the bass. I still contend that despite the mic issue I'd mentioned, I feel this has been one of your cleanest sounding recordings that I recall, that I heard all of the instruments well and they were well mixed... On your voice, it was certainly clear and easy to understand... I just felt it lacked the dynamics it should have and was a bit dull instead of lively...
Still back to your comments... One of the things I did after getting my mixes done the way I wanted first through... Was that I burned the initial mixes down to a CD and then listened to them first on my own computer, then my media center and finally on my Escapes stereo ( which I really like )... I also felt that mix lacked the bass ( overall, not just the instrument ) it should have had. This was when I purchased my Sens headphones and they helped a lot... but more importantly during the mix I was able to compensate for that with my EQ... did a reburn and retested. It ended up taking about 10 remixes before I got the lack of bass compensated to where I liked it... aka not having too much or too little etc. I also went back into the main mixes and tweaked a few channels here and there, but most was the overall EQ.
So the suggestion is... go back listen to your mix as it is now in your "cans"... then re-EQ it to where you think it'd also sound good on your other equipment... rinse and repeat.
I also wonder if, on your mic, you may have mixed out something in your voice ( with the EQ ) that you didn't care for personally and that resulted in the duller sound. To me it just sounded like a "tired" diaphragm but it wouldn't be the first time that I've heard of a singer not caring for their own voice in some manner and then making changes in the EQ in an attempt to get it to hear like it sounds in their own head. ... I'm not buying the last of this, but it was a thought that I felt I should bring up just in case there was a basis for it. A dead give-away would be an EQ frequency that is attenuated more than a standard curve can account for.