I have come up with a solution to our quiet audio with headphones. After spending much time researching the audio system on our phone I learned that it uses ALSA and I learned where to make some changes in the config files for it. I have created a zip file that contains the updated files and a script to install the files to the correct location. I tried to make a flashable zip but could not get it working. This changes values that alter the hardware volume. This is not an EQ adjustment. This is real amplification power!!! You should be able to use any EQ/DSP that you used before as long as it does not overwrite the ALSA system. I recommend Noozxoide EIZO-rewire PRO which is free on the android market. Here is how to install my fix. 1) Download https://www.dropbox.com/s/dhz6s5e7sd70w7r/ztefix.rar 2) Extract the files into a folder called zteaudio in your sdcard 3) install Root Browser from the android marker 4) open Root Browser. 5) go into /sdcard/zteaudio 6) Tap on ztefix.sh 7) Make sure execute script as root is checked and click execute 8) reboot your phone. 9) enjoy much louder audio! ***I am not responsible for any damage to your phone or headphones. This will really turn up the volume and can damage cheap headphones. I tested with a pair of Beats Studio Pro's and they sound amazing with this mod. ***This is not tested with CM. ***If someone has an easier way to install or can make a flashable zip Please feel free to do so.