I've got a Stanton Str8-80 turntable. Until today, I was unaware that the turntable had a built in pre-amp. it has switches to switch from phono to line mode. Before i understood this, i bought a pre-amp for the table. Now, i'm wondering if i can still use the external pre-amp by switching the turntable to "phono". can i expect that this would disable the internal pre-amp? If not, then i have to return this sucker, and it got decent reviews for what it is.

Now, understand, I'm using this DJcentric table mainly for just listening....not DJing, so i want the best possible experience and i'll be listening mainly through Grado Headphones.

Any help in understanding all of this would be appreciated.