Design & Build Quality

Focusing on the design & build quality of the GSP 670, it is made from solid black plastic and features metal hinges connecting the ear cups to the headband, as mentioned previously these brackets can move along 2 axis' which ensures a tight fit around the ear, contributing to noise insulation.

The headset features luxurious foam along the headband which we were greatly appreciative of while using the headset in our marathon gaming sessions. We also found the clamping pressure adjustments useful to ensure a pleasant fit. The ear cups, while tight fitting, do not choke the air from your ears meaning that they stay nice and dry which is no mean feat at all.

In terms of build quality, the headset feels as if it's been made to military standards, this does show in the weight of the headset with it weighing in at 398 g, however with the choices Sennheiser have made at the design level mean that this weight is distributed well and is not a detriment to the headset in practice.

Audio Quality

The headset features dynamic, closed back drivers and the audio quality is superb. The response across the frequency spectrum is great, and our personal favourite feature here is the 7.1 playback option, when enabled it works perfectly and in games where situational audio is massive advantage this headset certainly gives you the lead in this area.
Even though this headset is mainly aimed at gaming we believe that the multimedia playback films & music etc, is also worth calling out usually headsets that carry the moniker “gaming” perform poorly in the music department which we're happy to say is not the case with the GSP 670's with punchy bass & mids along with crystal clear high end frequencies.

Microphone Performance

As usual we put the microphone through test which include Skype and Discord and in this case we also tested the quality via a mobile phone call.
We found that the microphone was easily positioned thanks to the flexible boom arm and that it performs extremely well in all of our tests. You can count on your voice being clear and understandable and that you'll be able to find the right amount of noise cancellation to enable you to speak without having the clatter of your keyboard in the background. An example of how the microphone sounds is available in the software demo video.

Software

On to Sennheiser's Gaming suite software, when you first open the program you're greeted by an introduction video to the GSP 670. Along the bottom of the software you have 3 tabs, Playback, Microphone and a general settings tab. The first tab features a 5 band EQ, you can adjust the frequencies at 80, 300, 1000, 3500 & 12000 Hz, there are also options to change the playback mode between 2.0 and 7.1 audio there is also the option to change the reverberation levels and they offer the feature of a sound test.

In the microphone tab there are options to enhance & modify your voice, you can change it between warm & clear, as well as no modification at all. You can mute the microphone as well as alter gain, side tone & noise gate levels, as well as adjust the level of noise cancellation.

In the 3rd and final tab there are options to update the headset & dongle firmware, there are also toggles for auto sleep, setup, block notifications and the option to have the software launch on startup. You can also alter the programmable button in this screen.

Below is a video of the headset in action, as well as a demo of the software.