




                  Fosi Audio USB-Powered Cooling Fan 
                
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Fosi Audio USB-Powered Cooling Fan
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
We offer free worldwide shipping, except for certain regions such as Ukraine and Russia, where our services are currently unavailable.
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Customer Support
WhatsApp: +8613716612254
support@fosiaudio.com
Mon-Fri: 3:00 AM - 3:00 PM PST - 
                
FAQ’s
If you have any questions, please refer here: FAQs
 
Product details 
FAQs 
Please read our FAQs page to find out more.
How to: Choose the right banana plug?
- Closed Screw Type. All Fosi amplifiers use standard-sized speaker terminals (4mm pins).
 - Easy to wire up and solidly connect to amplifier and passive speaker.
 - If they do not fit, use a little force to tighten the plugs.
 - Fosi Audio Banana Plugs (Copper, Silver/Gold Plated): http://bit.ly/40Djq0U, https://bit.ly/3MkPL8t
 - Please watch tutorial videos: https://youtu.be/6pYhoqDlvNw / https://youtu.be/RGvBgGAwS9k
 
How to Diagnose Power Supply Failure?
- The following situations may cause this issue
 - Case 1: The LED on the power supply does not light up; Case 2: Amp/Preamp does not turn on; Case 3: When plugged into the Amp, both light on the amp & power supply start blinking; Case 4: Amp/Preamp make noise; Case 5: Sound shuts off by itself
 - Possible solution
 - Check if the power supply is illuminated when plugged into AC by itself.
Plug power supply into a different socket.
Test the adapter with a meter.
Try a different power supply (within a range of DC input).
Test the included power supply on other electrical equipment.
Please watch the tutorial video by clicking on the link provided. https://youtu.be/yCjygS03zTE 
What is a GaN?
- The GaN supply has a power output of 240W.
 - Offers overload and over-temperature protection.
 - The 48V 5A GaN power supply is also available on Amazon.
 



