Sound is literally the least important aspect of miner hardware, especially to a company that would like to sell a large quantity of units. One decent sized farm places single orders most likely equal to an entire years worth of solo purchases from home users. There is no money to be made
What matters is price, efficiency, 30/60/90 day failure rates, and the ability to buy in bulk with reasonable shipping times.
Also, Syan is still saying all the wrong things if they are in fact a legit company. They offer a FIVE YEAR warranty on mining gear? How many color guard troops waving red flags does it take to clue people in?
For home-miners, noise is literally the most important aspect next to efficiency, especially to a company that specializes in serving home-miners, a market that is completely and utterly untapped into...
Having said that, just tried to order more than 5 miners (as they said the limit was in this dubios press coverage) and it was no problem. Of course, I didn't go through but it might be worthwhile to notice that it's 158$ for shipping no matter how many you order, kind of strange