What do i need to do this? (eletronic experince needed)?

Question

im looking to build a electronic audio mixer with several difrent ports but i dont know if i will

a: need a internal power supply

b: have to have seperate cords for audio out if i have more than one input

c: be able to have a speaker that plays what is coming in

the box would be desinged with audio inputs attach to rotary switches then a seperate cord for audio out and a speaker in there but what would i need to do that

if theres a website with eletronics parts and how to use them please attach that too so i dont have to always ask stuff

Answer 1

You seem to be completely clueless. I suggest you either buy a kit with all parts + instructions (search the web), or just go buy an audio mixer.  These days, it rarely makes sense to make your own equipment, unless it is very high end and you know what you are doing.

Answer 2

Building a mixer would be a pretty advanced electronic project and the performance of the home built mixer would probably not be too great.

Here is a great mixer for not too much money:

http://www.zzounds.com/item--BEHXENTX802