Hi,
For the last few days I've been using this amazing product on two of the most important components in my system. It only cost a fiver and is available on every high street. Highs are sparklier, bass is deeper and the overall presence of my system has improved. I can't recommend it highly enough and would encourage all aos members to give it a go before spending any money on other upgrades.
http://www.otexear.com
This may sound like a p**stake but it isn't, I did have a problem in my right ear and everything I have said above is true.
A must for every audiophile's medicine cupboard I reckon.