Software

When the Sennheiser GSP 670 headset is used on a PC, you can control it through the Sennheiser Gaming Suite. It's the most advanced and feature-rich software driver Sennheiser has launched to date, roughly split into three categories: Sound, Microphone, and Settings.


The Sound menu consist of a system-wide equalizer, the playback mode selection (2.0 stereo or 7.1 virtual surround), a reverberation wheel (usable only when the 7.1 virtual surround sound is enabled), and an audio feedback test. The equalizer doesn't offer much granularity: it only lets you adjust 5 frequency bands (80, 300, 1.000, 3.500, and 12.000 Hz) by boosting or lowering them by up to 6 dB. There are 4 factory-adjusted sound profiles, selectable from the drop-down menu near the top-right corner of the window: Flat (no EQ adjustments), Movie (severely boosted bass and highs, slightly raised mid-range), Music (very similar to Movie, only with a flat mid-range), and Esport (bass completely removed, boosted mids, and severely boosted highs). You can also save your own EQ settings to custom profiles and use them as necessary.


The Microphone section is an interesting one. It has a "Voice Enhancer" feature which can in theory apply some post-processing to the voice to make it warmer or clearer. In practice, it sounds to me as though it doesn't do anything at all. Take a listen of these microphone samples, recorded by setting the Voice Enhancer to Off, Warm, and Clear.





Next, we have the gain, sidetone, and noise gate sliders. Gain is the "loudness" of the microphone, sidetone determines how much of your own voice you'll hear through the headphones (quite useful if you're bothered by not being able to hear yourself and your surroundings when using closed-back headphones), and noise gate allows you to set a desired threshold; with incoming signal below that threshold, the microphone stays muted. The latter is potentially useful in environments with constant background noise, assuming you don't want to use push to talk. Finally, Sennheiser implemented a Noise Cancellation feature, which aims to reduce ambient noise, but does so by introducing quite a bit of compression to the microphone. We'll examine microphone performance with all three Noise Cancellation settings (Off, Mid, Max) on the next page of this review to figure out the best one.


The Settings menu is where you get notified about available software, headset firmware, and dongle firmware updates, as well as install them. You can change the function of the Smart Button to either have it activate and deactivate surround sound or switch through the sound profiles on the right side. You can turn off the Auto Sleep feature here, quickly access the Sound menu within the Control Panel, access Sennheiser's profiles on social networks and so on.