Hello, first of all I am big newbie when it comes to sound. I have Cowon i9 player and GR07 mk2 IEMs which sound very good. Now I got two questions: 1. Does increasing frequency in player equalizer equals to lower sound quality or not? 2. Cowon Jetaudio got BBE and other sound enhancements. I use Hip Hop setting for most Hip hop/Rap songs and Rock setting for Rock/Metal songs and I can say that the sound for me sound much much better than if I would put it on Normal (Default) setting. It's just no comparison for me. But as I said I am very bad at this stuff so I am wondering, does the quality deteriorates when using those enhancements? For example with those settings sound is so much louder and all frequencies sound so much better compared to default settings. Edit, let's say what's better sound quality wise: High sound level with default frequencies or low sound level with boosted frequencies?