Guys I really need ur help I had a t1 audio (600 watts) amp awhile ago stored in my shed. I have came to the decision on upgrade my lupo front door speakers, and I hooked the amp up to find that 1 of the ports has been broken on the amp where you plug in the rca (a mate of mine told me) . When i turn the music up it cracks and pops very irritating but if i hold down the rca port its works fine,it seems everytime the amp jerks/shakes It starts to crackle..anyway im looking to replace the amp any suggestions to what amp I should get? how many watts do i need p.s not looking to spend alot just something cheap?