Is 33 dB to 40 dB the result of the experiment or what they promise you? Reducing the noise from 75 to 33 would be great, but the best I got was ~(50-55) dB.
You are right that a regular noise box reduces the noise level on average from 80-90 dB to 50-55 dB, but if you add additional noise insulation to ventilation ducts and other elements, as well as replace the cooling system, you can further reduce the noise level by 10-15 dB . But this will be very expensive and depends on the ASIC model and the location for mining.These solutions remain useful for those who own one or two mining devices, but for mining farms or whenever the number of miners exceeds two, it will be completely different.
I would love to have one of this with that level of noise as I keep my mining rig with 2-3 cards which is of the same noise if not more and most likely no one has ever complained so far,even when I keep my windows open as I have the mining rig in my living room,yet at 400 watt I would love an ASIC with such a huge amount of processing hash for the Kheavyhash algorithm.The ASIC companies seems to have gotten right also the market of occasional alternative home miners which think more about the future rather than the present and are betting on a long term profit.
