The microphone is a standard electret mic that has an adjustable gain knob built in. Similarly, I’ve noticed that this headset requires more fine tuning with the intercom squelch to reject noise while allowing you to comfortably talk to your passengers. I have noticed that getting that exact position can be challenging – too much distance from your mouth and you’ll need to speak pretty loud to get it to pick up your voice. When properly set up and positioned in front of your face, you will have no problems talking to ATC. The microphone on the Lightspeed Sierra is another item I would consider “average”. Radio calls are still able to be heard, but I start having difficulty hearing music while wearing sunglasses due to this effect. I actually get the impression at times that some low frequencies are actually amplified while wearing sunglasses. Due to the low clamping pressures, the earpieces of the sunglasses open up pretty large holes in the ear seals of the headset which lets a lot of noise in. One thing to note is that, like many ANR headsets, wearing sunglasses in the normal way while wearing the Lightspeed Sierra headset results in significant noise leakage. I have never had an issue with in-flight noises being “too loud” while wearing this headset. The Lightspeed Sierra is no exception to that. “Most” headsets do a great job attenuating noise so you can hear the radio and don’t get fatigued from too much sounds. This is not really an issue, though, as mediocrity is not necessarily a bad thing in this market. When compared with other ANR headsets below $600, very little difference in noise reduction was noticed. It definitely still muffles the sound – but it is nowhere as good as dedicated passive headsets.ĪNR performance is middle-of-the-line. This is probably due to the light clamping pressures (even when fully adjusted) which contribute to the comfort of the complete system. The cockpit noise grows quite loud when the ANR controller is switched off or when the batteries die. The Lightspeed Sierra headset combines passive and active noise reduction to achieve a quieter cockpit.
You can wear them like this for hours with no fatigue whatsoever. In most cases, with ANR enabled, you will be quite comfortable with them clamped just tight enough to stay on your head. The earcups pull up and into the top headband, allowing you to select how tightly you want them to clamp against your ears. Part of this comfort is undoubtably due to Lightspeeds unique adjustment band at the top of the headband. The headband adjustment mechanism is a large part of the reason why Lightspeed headsets are so comfortable.
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