Will HPA-2C be able to drive AKG K712pro properly? Besides, I want to buy Fostex th610 (25 Ohm impedance) sometime later. Will it be OK to use it HPA-2C or I would hear hum?

Could anybody help me with USB DAC/Amp Want to buy AKG K712 pro and want relatively cheap (up to 300$) USB DAC/Amp, which can drive it properly. Want to buy Fostex th-610 sometime later and use with this DAC/Amp too. The only sound preference is not too much bass. Listen to different music...

Hi, could you possibly help me with choosing the right size of Comply foam tips for ie-fc300. I wanted to buy S and T-series sets, but do not know, which types (100, 200, 400 or 500) I should choose. Thanks in advance.

  No, they are not. This type of connector is called MMCX and you can buy 3-party replacement cables on e-bay. The same cables and connectors are used for Shure headphones and IEMs.