Hi All,

First post here (and it's going to sound like a noob question) so please be gentle.

I'm mixing on a Traktor S2. Basically everything is going down as follows:

Same BPM - not using sync
Sometimes even mixing harmonically or in key
Phase meter is dead center
Bass on the incoming track is set to about 10:00
It even sounds right in my headphones

When I record a session and play it back sometimes there's what sounds like a beat mismatch. Am I missing something or not hearing properly? Or is the song(s) not beat gridded properly?

Any help or suggestions would be greatly appreciated.