First mix with room treatment

what did you use for bass?

I am not sure what type of bass it was but I know it was a 4 string in Drop D tuning. I ran it through an amp sim and then slammed it with compression and a little EQ.

I think the kick needs to come up quite abit too. is this 'mastered'?

It is not mastered. What are you listening to this on? Kick is a good level here on my BX8As. I agree on the low end issue though.

Thanks for the responses everybody!! I will post an updated mix with vocals soon.