Hi Guys, Well I posted a while back about my X-Fi Forte analog outs dying on me so I have been forced to use the DAC on my Z5500 (from the digital out of the X-Fi Forte) to power my HD 555s. I have personally found the Logitech's headphone out to be awful compared to the Forte's headphone amp (well, obviously lol) and I have been considering to either replace the X-Fi Forte with a new soundcard or get a USB DAC. I am leaning towards the USB DAC because I can use it with my iPod and my Macbook Pro but I am concerned if I will be able to purchase one that will be audibly onpar with my X-Fi Forte. So far, I was considering the Fiio E7 but I am open to other suggestions. Thanks in advance.