How much dB noise reduction with the EQ 1 headsets?

We understand a clients requirement for dB noise reduction data as there are a number of headset manufacturers that play this game, drawing clients into the false sense of standards when making a remote descision on headset choice. Ultimately its in the 'ear of the beholder' and not in fancy numbers on a marketing blurb.

An ANR headset works by listening for noise and delivering an equal level and exact opposite wave of the frequency that it hears.
The level (loudness) of noise that it can cancel is governed by the amplifier and speakers in the headset, anything noisier than the amp and speakers can handle will not only not be cancelled but added to by the amp and speakers attempt to cancel it.--net result—extra noise in that frequency.

The EQ-1 system uses its passive design to reduce the noise in the ear cup and any extra noises that come in are then targeted, in other words our amp and speakers do not need to work as hard and as a consequence noisy aircraft such as the Beaver, that cannot use any of the big players headsets due to ANR overload, have brilliant results with EQ-1.

Noise is made up of many frequencies but ANR will/can target only certain frequencies, which results in some frequencies having the noise increased (you are better off NOT wearing the headset at those particular frequencies) these frequencies are generally in the higher range on ANR headsets.
One well known manufacturer's headset is fantastic at reducing low frequencies, typical of a two blade prop on a Cessna 172 yet for some reason all the high frequency (tinny) noises are quite evident, resulting in a rattly sounding ride.
EQ1 will never be able to compete with the wow factor that you get when you press the ANR button on one of the big name headsets, simply putting the EQ-1 on your head makes most of that noise difference, where the EQ-1 shines is in a reduction of noise across a broader range of frequencies and a much quieter ride in noisy cockpits, oh yes, almost forgot, they are also wireless.
So In a nutshell unless you have a particular frequency that you require data on it is difficult and most certainly unethical to make sweeping statements about a particular headsets dB noise reduction.

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