I'm referring to the Geek 450. I don't need more power than that. I listened to the HM-901, X5, ZX1, Studio V 3rd Anv, and compared them in this thread.
The conclusion of the thread was that none of them presented a single (sonic) reason for me to leave my current devices. The Geek was a completely different story. I had real "WOW" moments with it, which was a first for me in my long desktop and audio setup history. Go check out the threads and see what everyone is comparing them to.