Oh dear @ Monster Cables.
You got royally ripped my friend. The only cables that make a slight difference on sound are ones with a lot of current going through them such as high powered speakers. A good brand might make a little difference. Interconnects or low powered headphone/mic cables ain't gunna make bugger all difference. And if there is one it will be imperceptibley small and not worth paying for. And even if they did, Monster Cable is the last brand you should of chose
I should add that there is a point in good shielded low and high powered cables if you are suffering from interference.