Thanks for the suggestions. For now I will stick to AK100/IE800. 

Thanks for the reply. So given that the input impedance of IE800's is 16ohms which is much lower than 176ohms (1/8th) rule, I see that I have the following options   1. Stock AK100 -- IE800 2. RWAK100 -- IE800 3. Stock AK100 --Headphone Amp -- IE800   I mainly use the AK100 --IE800 while...

Hi Guys,    I am currently pairing AK100 with Sennheiser IE800's. The impedance of these IEM's is 16ohms. I intend to use AK100 with only these IEM's. Would really be interested in knowing if I should be sticking to AK100 or get the RWAK100? Would also be interested to know if anyone has paired...