The first thing you will most likely notice is the size. The headset is massive, especially coming from a Logitech Wireless ClearChat Headset. The aesthetics are nice and sleek – very malevolent, yet polished:
The build quality is excellent. Overall the Sirus is very sturdy, and despite the thick plastic construction it has the perfect amount of flex to it for easy movement, as well as a very soft and smooth feel. The sliders account for a wide array of head sizes and the length adjustments lock firmly in place:
The foam padding rests nicely on the top of the head, and allows for consistent balance. The force downwards will be a bit restrictive at first considering that it rests right on the soft spot of the skull, so the headset may feel a bit odd, but you will get used to it after wearing the Sirus for a few hours:
The earcups covering the drivers have a great plastic snap-on design. They are large and blockish, and most importantly comfortable. The Sirus 5.1 headset comes preinstalled with the microfiber covering, but can be replaced by the other silky leather (vinyl) earcups by simply removing the microfiber coverings and pulling on the black leather coverings, and snapping the bracket back in place. Both feel very, VERY good, even after long gaming periods – a luxury I had never previously had with headsets.
My Logitech Wireless ClearChat not only has small rounded leather earcups, but prolonged use leads to a lot of pain, not to mention they only cover three-fourths of both my ears (sound leaking). On the other hand, I was absolutely astonished that I had lost all sense of my surroundings while wearing the Sirus, having been the first time the earcups fit perfectly and blocked-out outside noise. Couple that with 360 degree 5.1 audio and the total immersive experience was phenomenal to say the least.
That immersive experience comes from three F/R/C 30mm drivers (32 Ohms impedance) spaced in a triangular formation point inwards, with a bigger 40mm sub driver (16 Ohms impedance) rounding-out the bottom. The circumaural closed dynamic drivers sport true physical 5.1 surround audio with >105dB sensitivity, 10Hz-20,000Hz frequency response, and less than 1% distortion.