Hi, I own a pair of Shure SE425 IEMs and am looking to also buy a pair of over-ear headphones for extended listening sessions (at work or on flights). I can spend no more than $300, and will be listening via iPod or cellphone more of the time.   I've been satisfied with the sound on the SE425s...

I have what may be a basic question, but one I haven’t seen answered in my searches. I’m looking for a quick/easy way to “bump up” the sound from a basic home audio system. I’m asking to help a family member, so I don’t have specific model numbers – but my question isn’t about the equipment as...