I'm trying to find an all-in-1 headphone amp, DAC and pre-amp (or just a dac/amp with balanced outputs that can be muted) for my office setup. My current setup runs PC -> Focusrite 2i4 -> powered monitors and a range of headphones (LCD-3, Fostex TH-X00, Senn HD580, Shure SRH 840, and Weston W40s occasionally). For the most part the setup work fine as the Focusrite has volume controls for both the monitors and the headphones. However, I've found the Focusrite to be a bit buggy, and the headphone amp is lacking.
Given all of that are there any pieces of kit that jump to mind that folks would recommend? So far the only product that I've been able to find that fits the bill is the Oppo HA-1 which looks like a fine choice, but I'm trying to determine whether there is anything else out there that can meet my needs.