Fosi Audio K5 User Manual

12 pages

To Next Page

To Next Page

Page #1 background image

Loading...

Page #1 background image

Thanks for choosing us!

Fosi Audio K5 User Manual

Table of Contents

Questions and Answers:

K
Kara LewisJul 27, 2025
How to fix Fosi Audio Amplifier K5 not recognized on Windows?
- M
  Mary FrederickJul 27, 2025
  If the Fosi Audio K5 amplifier is not recognized on Windows, try these steps: First, search for and open 'Device Manager' from the Start menu. Expand 'Universal Serial Bus controllers'. Uninstall each device listed by right-clicking and selecting 'Uninstall'. After uninstalling all devices, restart your computer to automatically reinstall the USB controllers. If the issue persists after a Windows update, ensure all Windows components are updated, then reboot and retest.
E
elopezAug 1, 2025
What to do if I get intermittent sound via the USB connection on my Fosi Audio Amplifier?
- L
  Larry HernandezAug 1, 2025
  If you're experiencing intermittent sound with your Fosi Audio Amplifier via USB, try connecting the USB Type-C cable to different USB ports on your PC, as some ports may have unstable data transmission. If the problem continues, replace the USB Type-C cable and test again.
A
allendawnAug 5, 2025
Why do I get endless white noise from my Fosi Audio K5?
- S
  Sarah LeeAug 5, 2025
  If you're getting endless white noise from your Fosi Audio Amplifier, first check if the input mode selection is correct. Also, the K5 supports simultaneous 3.5mm headphone and RCA sound output; check if the headphone output is normal. If not, try replacing the RCA cable to test again.
G
Gerald McmahonAug 9, 2025
What to do if my Fosi Audio K5 Amplifier cuts the sound in or out?
- T
  Todd MontgomeryAug 9, 2025
  If the sound cuts in and out on your Fosi Audio Amplifier, try reducing the sound level of your device. Additionally, try swapping your audio source and cables to test. If the issue persists, there may be a problem with the K5.
P
Pamela WoodAug 13, 2025
What to do if there is no Dolby/DTS audio and I still get noise through the USB input on my Fosi Audio Amplifier?
- E
  egarciaAug 14, 2025
  If you are not using Dolby/DTS audio and still experience noise through the USB input on your Fosi Audio Amplifier, try replacing the USB Type-C cable and retesting.
K
Katie LittleAug 18, 2025
What to do if my Fosi Audio Amplifier stops working after a short time of use?
- A
  alexandrialozanoAug 18, 2025
  If your Fosi Audio Amplifier stops working after a short time, ensure that your audio source, headphones, amplifier, and active speakers are functioning correctly. Check all connections of the input and output cables. Try changing the audio input source, output devices, and cables to test again. Also, verify that the power supply is working.

Fosi Audio K5 Specifications

General

Bluetooth Version	5.0
Treble and Bass Range	±6dB
Frequency Response	20Hz - 20kHz
Input	RCA, Optical, Coaxial, USB, Bluetooth
PC-USB Operating System	Windows, Mac, Linux
Headphone Matching Impedance	16Ω - 300Ω
Distortion	<0.03%
Output Mode	Stereo
THD+N	<0.03%
Power Output	50W x 2 (4Ω)

Summary

Product Specifications

Product Overview and Controls

Mode Switch Operation

Explains power, mode switching, and volume tuning functions for the device's main knob.

Package Contents

Quick Setup Guide

USB Input Connection

Guides connecting the K5 DAC to a PC, headphones, or powered speakers via USB.

Optical and Coaxial Input Setup

Troubleshooting and FAQs

No Sound from Microphone

Addresses issues where there is no microphone sound output from the device.

Powering On the K5 DAC

Explains the correct procedure for powering on the K5 Mini stereo DAC.

Resolving Endless White Noise

Provides solutions for persistent white noise issues experienced with the DAC.

White Noise from Dolby/DTS Audio

Explains how Dolby or DTS audio settings can cause white noise.

USB Input Noise with Dolby/DTS Audio

Troubleshoots noise issues specifically occurring with USB input and Dolby/DTS audio.

K5 Not Recognized on Windows

Guides users on resolving the issue of the K5 DAC not being recognized by Windows.

Plug-and-Play Setup on Windows

Explains how to set up and use the DAC with Windows using plug-and-play.

Spotify Playback Issues

Troubleshoots problems playing Spotify music in plug-and-play mode.

Achieving High Resolution (24Bit/96kHz)

Instructions on how to achieve the highest audio resolution on a PC.

Intermittent Sound via USB

Addresses issues related to intermittent sound interruptions over a USB connection.

Sound Cutting In or Out

Troubleshooting steps for when the audio sound cuts in or out.

Device Stops Working After Short Use

Diagnoses why the device might stop working after a brief period of use.

Comparison Section

Warranty and About Fosi Audio

Related product manuals

Preview: Fosi Audio P1

Preview: Fosi Audio T20

Preview: Fosi Audio M03

Preview: Fosi Audio TB10A

Fosi Audio TB10A

Preview: Fosi Audio BL20A

Fosi Audio BL20A

Preview: Fosi Audio BT10A

Fosi Audio BT10A

Preview: Fosi Audio BL20C

Fosi Audio BL20C

Preview: Fosi Audio BOX X2

Fosi Audio BOX X2

Preview: Fosi Audio DA2120A

Fosi Audio DA2120A

Preview: Fosi Audio DA-2120C

Fosi Audio DA-2120C

Preview: Fosi Audio BT20A PRO

Fosi Audio BT20A PRO

Preview: Fosi Audio BT30D PRO

Fosi Audio BT30D PRO