I normally play bass, but I dabble with guitar sometimes. I also live in a small apartment, and since I often play late at night and I like my upstairs neighbors, I practice using headphones. I have a nice setup for bass that I've really come to enjoy. I plug my bass into an MXR Bass Preamp pedal, and that runs into a Behringer MA400 headphone amp. I use the preamp pedal for its tone-shaping capabilities (it has a 3-band EQ with sweepable mids); otherwise, it's nothing fancy (no distortion channel or anything like that). The MA400 has both an XLR and quarter-inch input, and I use the XLR out on the preamp pedal to run into the headphone amp, so I can also plug an MP3 player into the headphone output if I want to practice along with something.
I like the setup, but I haven't really found anything comparable for guitar. I've found DI boxes for guitar, but they generally don't seem to have a 3-band EQ, which I'd like to have (the MA400 only has volume controls). It looks like maybe there isn't really anything like the MXR Bass Preamp for guitar. Is this sort of setup not generally used for guitar? Why or why not?