Personal Monitor Mixer

I’m trying to find a cheap sollution (preferably in a small box) to the problem of my monitoring on stage. I’m going to play my LP over a backing track and I would like to have a small mixer where I could set a different level ratio of my headphone LP/Track and send a different level to the PA (there won’t be another big live mixer, I’m plugging straight into the PA)

This way I could have a louder LP in my headphones to hear what I am playing and not be to loud in the PA. I’m rather familiar with live mixers and I know my way around stuff, but I don’t want to bring the whole 16 channel mixer with me. I just can’t find a small box with 4 channels (2ch: LP->effects in stereo 2ch: backing track) that would allow me to set up the levels (I don’t need EQ and stuff) with 1xStereo Outs and Headphone output.

Anyone’s seen something like this?

How about?

http://www.mackie.com/products/402vlz3/index.html

http://www.sweetwater.com/store/detail/HearBackMix/

this might do the trick