FiiO E17 USB DAC Headphone Amplifier $90 OBO Very powerful little amp/DAC. It adds great depth and bass to any headphone you decide to use with it! Again, comes with original packaging and accessories. Amazon link to the amp FiiO E9K High Output Desktop Headphone Amplifier and...

I have owned or currently own three of the IEM's that you listed. The CKS77's, monster turbines, and the soul sl99's. I've owned two pairs of monster turbines (both of which ended up with huge microphonics issues)...They sounded pretty good while they were functioning properly, but they crapped...