If i put too much input signal into my little amp will it burn?

 I'm building a 5 speaker boom box out of a heineken beer keg. For the input interface and amplifying, i'm using an old pc speaker amplifier circuit, and i want to do the following changes to it:

Put 3 input jacks, altogether (plugged into the same spot of the circuit): 1x   3.5 mm jack for mp3 player input. Kind of Aux input.
                                                     2X  1/4" jack for two guitars or another combination of instruments.

Put another output jack, 1/4", additional to the 3.5mm already there.

Questions: If i plug too much things in will the amplifier burn or explode?
                     Will it be able to drive 5 speakers (1x 1.5", 2x 2" and 2x 4" approx.)

Other info: it runs with a little transformer of 220v/60hz to 9V DC. The speakers were rated to 110V/60hz. Does this means it acctualy runs on 4.5V DC?

cvianna17 years ago
In addition to the imput/output power levels, you also need to make sure you have the correct output impedance with your output devices.
Re-design7 years ago
If you plug too many things into it or put too much power going in it will damage the amp or the speakers.