Added a better shot of the circuit diagram. Whilst I appreciate that my choice of IC's may not be the best, they are what I'm working with. I'm not looking to blow Michael J Fox back to 1985, I only want to demonstrate an audio signal that I can control with the 3 band tone and have an output meter. At the moment, and as far as I can see, this appears to work.
I only need it to perform and function as it should. It is based on a design idea for a small, portable audio amplifier that, for example, could be used to plug an ipod/mp3 player into or as a portable speaker for a laptop. I have added a drawing of a possible unit.
I promise you, if I succeed here I will move onto more powerful chips and op amps.