*** Syan miner is a SCAM! If someone buys their miners without a well-known and trusted Forum User 1st getting one for doing a review and posting it here then well, you have been warned ***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?
Can't hurt to try and see if they're legit. If they're new to the mining scene they might just be inexperienced with everything, but lower sound could still be a small plus, even if it's not a huge bump up in sales.
I do find it a little strange they aren't willing to distribute any units for review, though. Even one Hotmine gave out a few units of their Bitfury miner for review, and we all know how elusive those things are.Exactly.
Once again to repeat the 'How to prove they are a REAL miner maker' Mantra:
a. Do the Tradeshow route to get (legit) press coverage of one running to show the general public you at least built something and have a working design. There are BTC trade shows running several times a year all around the world. Once again, that is where Hotmine first showed their miner to the world and what led to Haggsfin bugging them to do a review. Worked very well for them

b. Start an official Syan thread here for announcements and LEGIT press coverage links -- NOT Pay-for-Placement PR releases who's only verification is that the customer's check to their PR agency cleared the bank as payment for the 'news release' being distributed..
c. Solicit very-well known reputable users here to do a review of it with the usual conditions: Send it to them gratis, they do a yay/nay/meh review of it with pictures and screenshots. After a week or 2 of testing the reviewer will then either return it or if they really like it - pay for the one they were sent. Proven reviewers are NOT looking to 'get a free miner'. They are looking to prove a company actually can make a product that works. After ther review it WILL either be returned or then paid for. Providing demo units is a MARKETING EXPENSE and in no way a risk to the manufacturer.