ProtegeManiac
Headphoneus Supremus
Will e10k make difference though, i do hear a neutral sound and bit more clarity between them.
Can't say for sure if you will get enough of a difference.
E10K has 200mW into 32 Ohm
Around 2.55 Vrms for 300 Ohm load which means 111-112dB for the Sennheiser HD650