Hey guys,

Lately I have been seriously considering upgrading my speakers/subwoofer to my system but slowly at a time and I had a few questions.

I am a noob at this so please bare with me.

Right now when I play music through the auxiliary cord with my iPhone turned up to the max, I need to set the volume at 41 out of 60 I believe and that's not even that loud, if I got an new amplifier to power the stock mids, tweets, etc will it be louder at a lower volume? Would I need to get a 5 channel amp? (What number of channels)

Also could I get my simple 10 inch W3 and amp (monoblock) installed and whenever I feel like I have enough money just replace the amp and subwoofer just like that, or will I run into any problems. (Literally take out the amp/subwoofer and just put in a new amp and subwoofer but leave the wiring that's previously installed, basically plug and play)

I will also need an LOC like an AudioControl LC6i to make sure everything including speakers and subwoofer work correctly right?

Thanks!
Any help would greatly be appreciated.