Review on 🌀 AC Infinity MULTIFAN S4: Silent 140mm USB Fan, UL-Certified for Receiver, DVR, Playstation, Xbox, Computer Cabinet Cooling by Marc Stewart

The first thing you'll notice about this fan is the quality workmanship. have a stable surface. We have this under our Mac Mini (Late 2012 Quad Core i7) and it keeps it super cool even under full load. The fan has a small built-in speed controller that gives you three speed and airflow options. as well as a switch. We use this fan in a standard recording studio rack. The volume of his work was one of the most important factors and it pays off. At the lowest level, directly in front of the grill, the fan runs almost silently. I say almost because we have an isolator holding our rack that is completely soundproof. Even tinnitus is clearly audible in these conditions, and in this cabin, this fan is still incredibly quiet (less than 5dBv). Each additional adjustment roughly doubles the airflow and doubles the dBv. In practice this will work very well. in most rackmount applications (home theater, professional audio) and in most cases will never be audible even at higher fan speeds. Well thought out product with high quality design and build quality. Hartwell Owner/Chief EngineerFeatherlight Recording Studio