Help with speakers

I currently have 2 12s in my trunk wired to a sony mono d amp... Im looking to get a pair of 5x7s for the front of my car and a pair of 6x9s for the back. What would I have to get to run these... Am i able to run them off my amp thats running the 2 12s or would I have to buy a new amp. Because I heard that if I run them on the deck they won't sound that good ... Any Help ?? Please .. thank you

you will need to get a new amp. profile are failry cheap and still have qaulity. and the reason y is becuase if that D means d class then it will have your highs distorded.(sp)

I probaly thought that i needed a new amp ... but this amp says it has preamp outputs for adding extra compents and speaker level input and it says jus connect the amp to the speakers outputs ... but if this dosent work what would be a website where i can get one you said for a decent price ... kinda low on cash because im buying a pair of 6x9s and 5x7s ... Thanks for the help

the RCA outs on the amp is so you can wire in another amp without an active crossover. You cannot use the type of amp you already have to play mid/highs.