Unfortunately, it still tends to come out too quiet. )-:
This was covered a little while ago, hopefully this might help:http://www.hydrogenaudio.org/forums/index....st&p=633846C.
I'm a little suspicious that you are having volume issues with a 106 dB/mW headphone, with an external amp.
92db is fine as long as you enable "prevent clipping" and do ReplayGain scanning after lossy encoding. It's going to mean that anything which nominally RGs to -3db or above, and peaks at 0dbFS, is not going to sound as loud as it otherwise would. That is very rarely an issue.
Besides that, buy a bigger headphone amp
buy more sensitive headphones
get your hearing checked.