Originally Posted by
gsa103
You want what are called "in-ear monitors". Shure and Etymotic Research both make very good ones. Expect to pay $50-100 for a decent pair, although they can easily reach $300+ for true studio models.
Check out the link I provided. It's a pair of balanced armature in ear monitors. For < $15 on Amazon. Yeah I thought bull**** too but they really sound quite good.
They're not as good as my Sony monitors, and my Sennheisers sure sound better, but these things are awesome for the money and you can leave them at work without sweating it.