Power supplies, cases, SSDs, heatsinks, and even headsets are just some of the areas that Corsair has entered with much success. The HS1A exchanges the USB interface of the HS1 for 1/8" mini-plugs, and necessarily lacks Dolby Headphone. Dolby Headphone is a very large portion of what made the original HS1 such a great headset, and indeed, worthy of the title 'gaming headset'. The absence of Dolby Headphone, then, may not fare well for the HS1A. Let's find out.