The Sennhesier U320 gaming headset is a high end gaming headset, seemingly aimed at the higher end of the market, those who want top quality sound, voice and comfort in their gaming and who are happy to pay a higher price. They seem to be aimed at the same market as Turtle Beach and judging from their quality, are more than capable of competing there.
The headsets come packaged in a plastic blister pack (not so welcome) but thankfully these separate and open easily (no sharp plastic edges - very welcome).
The first sense I got was of quality. They look great, they feel solid and smack of a high build quality.
The headphones themselves are designed to work across a range of devices that can take a USB input and are aimed at the PC, Xbox 360 and PS3 but I'd imagine will work with future consoles with a USB input.
They come with cables to suite a range of configurations from the simplest (USB direct into the PC) to other audio output options such as an amp, they also suit HDMI or composite/component connections for the consoles via the red and white audio jacks. There's also a 3.5mm audio cable for connecting to the voice chat input on an xbox 360. This doesn't cover voice chat on the PS3 though as that is designed to be catered for via blue tooth headsets.
I've tested the sound output on PC, Xbox 360 and PS3. The quality is very high, the depth and range of the sound is fantastic having the sound close to the ear means I'm picking out details I normally wouldn't when output at distance by my amps or TV. I found the PC output to be a little quieter than the Consoles, although it is adjustable and still loud at maximum. [Edit} I have now tested these with my PS4. They can be plugged in via USB (as the PS4 supports this) an they work very well and help to create an even more immersive experience.
In order to work well with consoles, given they tend to be used for "sofa gaming", these would fall short without a good long cable and they've catered well with a good length cable. Mine comfortable stretches a few feet with plenty to spare. The designers also considered you won't want multiple cables across so the input cable from your sound output plugs into the USB connection itself at the console or PC end of the cable.
The voice input also works well, sound received is crystal clear and separate from other system or game sounds and apparently sound broadcast is very clear and high quality (using Xbox chat, Steam and Skype) as confirmed by friends who helped me test these. Voice chat levels can be altered via a slider. There's also a "side tone" option so that you can hear yourself through your headset if you prefer (can help to avoid shouting, as these cover the ears).
There are also controls to provide a bass boost (i find this worked really well in some music and games but it's good to have the option as the heavy bass in some shooters could be a bit much for me).
This headset is also very comfortable, it sits nicely over the ears and is easily adjustable and the padding keeps the ears and head nice and snug. I think these are much more comfortable than the one ear set that I have been using for console gaming and they'll be taking pride of place in my gaming. The fact i can replace several sets for one across sveeral devices is very appealing and the fact i can then out my game sound to these rather than the TV when console gaming will be music to my wifes ears.
Overall I would highly recommend these. They're premium in price but the quality is very apparent and you can see and hear what you're getting for your money. Impressive.