1. Q5 connects to Apple iOS device, but can't be recognized? Or try to open the FiiO Music app (if you haven't installed it yet, you can download it from the App Store first). When playing a song, “FiiO Q5†appears on the playing page. As shown  HQD Disposable Vape, HQD Disposable E-Cigarette, HQD Disposable Vape Supplier Shenzhen Uscool Technology Co., Ltd , https://www.uscoolvape.com
Answer: 1 First, please confirm whether the lightning head adapter cable connecting the Apple device and Q5 is in place. It is recommended to re-plug the patch cord;
2 It is recommended to restart the Apple device and try to connect.
If you want to confirm whether Q5 is successfully connected, go to “Settings†-> “General†-> “About this machineâ€, then the screen will be drawn to the bottom. If “FiiO Q5†appears above “Legal Informationâ€, it means Q5 Successfully connected to the Apple device, as shown 
2. What happens when Q5 crashes?
A: When the Q5 crashes, try the following methods:
1 Try using a similar tool such as a paper clip to poke the reset hole (the reset hole is above the side micro USB port) and reset. After reset, Q5 will restart automatically;
2 If the reset does not work, press and hold the power button for at least 8 seconds to perform a mandatory shutdown. Then press the reset hole again to reset.
If the above operation still can not reply, please contact customer service 400 phone / customer service QQ (find service).
3, Q5 new USB DAC driver installation and use tutorial A: Q5 to connect to the Windows system computer through USB, you need to first install the USB DAC driver on the computer. In order to work stably, if it is a Windows 10 64-bit system, it is also recommended to install the driver. The USB DAC driver installation and usage tutorial is: Click to view.
4. What is the difference between the 2 USB ports of Q5?
A: The micro USB port on the side of Q5 is used for charging and Bluetooth program upgrade. It is generally recommended to use DC 5V/1A (or 1A or above) charger for charging; the micro USB port at the bottom of Q5 can be connected to computer or Apple device as decoder. The system firmware can also be upgraded through this USB port.
Note: In fact, the USB at the bottom of the Q5 can also be charged, so when the Q5 is connected to the computer, it is normal to see the white indicator light breathing. However, since the charging current is small, the charging time will be long, so the bottom USB charging is not recommended.
5, Q5 can not be turned on and can not charge, how to do?
A: It is recommended to press and hold the power button for at least 8 seconds to perform a mandatory shutdown, and then reset the reset hole. Then use a charger larger than 1A to insert the side charging port for charging.
6, the first time using Q5 Bluetooth, how to enter Bluetooth pairing or disconnect Bluetooth?
Answer: After the Q5 is turned on, press and hold the “PAIR†button on the left for 2 seconds, and the front light slot displays the blue light for Bluetooth mode.
At this time, Q5 will automatically connect back, and the blue light will start to flash. If there is no device pairing information, wait for about 3 seconds, the indicator light will flash red and blue, and Q5 will enter Bluetooth waiting for pairing status. After turning on Bluetooth on your phone, search for FiiO Q5 and click Connect.
If you want to quickly enter the pairing state, you can press and hold the “PAIR†button for 5 seconds, and the front light slot will alternately flash red and blue.
If you want to exit the Bluetooth mode, press and hold the "PAIR" button for 2 seconds.
Note: In Bluetooth mode, other input methods are invalid.
In the connection state, some mobile devices can see the Q5 device, but this time it cannot be connected, and the connection will be prompted to fail. It can only be connected if the red and blue are alternated.
7, using Bluetooth again, how does Q5 automatically connect back?
A: After Bluetooth is turned on, no operation will be performed. Q5 will search for the two devices that have been connected recently, and the blue light is always on. Before turning on Q5 Bluetooth, make sure that the Bluetooth of the previously connected device is turned on. The time to connect back to each device is about 7 seconds.
If the connection is unsuccessful, it will enter the pairing state again, and the red and blue will flash alternately.
8. Can Q5 connect two audio devices at the same time?
A: No, when you need to switch devices, please close the connected device or operate Q5 to enter the pairing state, and then use the new device for pairing.
9. Can Q5 connect a Bluetooth headset or a Bluetooth speaker?
A: Because Q5 is a Bluetooth receiving property, you cannot connect a Bluetooth receiving device such as a Bluetooth headset/Bluetooth speaker.
10. Does Q5 support Bluetooth 5.0?
A: The current Bluetooth version is 4.2. In theory, it can be upgraded to version 5.0.
11. Does Q5 support LDAC?
A: Q5 does not support LDAC.
12. Why is the Q5 Bluetooth usage distance shortened when used in handheld mode?
A: This is due to the fact that the Bluetooth antenna is blocked by the human body, especially when the hand is held and completely obstructs the position of the upper part of the back, because the position of the Bluetooth antenna is just right at this position. When using it in your hand, try not to block the upper part of the back cover of the Q5 with your hand or other objects.
13. Can Q5 support the headset wire control function and answer the phone?
A: Q5 does not support headset wire control, nor does it support answering calls. When the Q5 is connected to the mobile phone and needs to answer the call, please unplug the cable from the Q5 and the Apple device. Similarly, when Q5 connects to the phone via Bluetooth, it can't support the call.
14. What is the meaning of the breathing light and when will the breathing flash occur?
A: When the light trough is blinking, it means the battery is being charged. For example, when connected to a computer, it displays white and blinks.
When the Q5 is in the non-working state or the power is off, the charger is inserted, and the red light flashes and the battery is charged.
At full power, the lighting effect will not breathe. When Q5 is fully charged in the off state, the red light will go out.
15. What do the work lights of different colors of Q5 stand for?
A: The work indicator of Q5 represents different input methods. 
White: USB input Green: Line input Purple: Optical input Yellow: Coaxial input Blue: Bluetooth input In addition, when any of the lights of the color flashes, it indicates that the machine is charging.
The red light is used to indicate the status related to power and charge:
1. Red light breathing - charging when shutting down 2. Red light flashes twice every 5 seconds - low power prompt 3. Red light is always on - power is exhausted and will be shut down 4. Red light is off - full charge (shutdown Charging in the state)
16. About the priority of the five inputs of Q5 and the switching mode of some inputs Answer: 1 The priority of the five inputs of Q5 is: Bluetooth>USB DAC>Coaxial = Fiber = Line Input 2 Line, Coaxial and Fiber Input At the top of Q5, share the same port. When connecting different audio input, you can switch between different input modes by pressing the next button on the left side of Q5.
17. Can Q5 be compatible with X7 (X7MKII) amp module?
A: The Q5 adopts a replaceable amp module design, which is compatible with the full line of amp scales. The accessories are also equipped with a T5 screwdriver and T5 screws for easy replacement of the amp module. (Q5 is paired with the AM3A amp module by default.)
18, when connecting the computer and mobile phone decoding, Q5's up and down songs have no function?
A: The up and down songs of Q5 and the play pause button function only work in the Bluetooth state.
19. Does Q5 have a power-saving shutdown function?
A: When Q5 is in non-working state, that is, there is no input source or input source but no signal input, it will automatically shut down after the set time (the default is 10 minutes). The power-saving shutdown time can be set via the FiiO Music APP.
(When the Bluetooth connection is made, even if the music is not played, the system will have a variety of audio signals output, so the Bluetooth status will always work.)
20. How does Q5 connect to a computer to play music in DSD format?
A: If it is an Apple (iOS) user, you need to purchase the software in the DSD format, such as the Audivana Plus, from the Apple store. If it is a Windows computer, you can install foobar2000 to play it. Here is a detailed tutorial explaining the settings related to foobar2000: Click to view.
21. Can Q5 be connected to an Android phone?
A: We generally do not recommend Q5 to be used with Android phones. We do not support post-sales support for Android phone compatibility issues. The reason is: 1 there are too many uncertain factors in the system adaptation; 2 may cause the mobile phone to reverse charge. Detailed instructions can be found in this article: Click to view.
22. Can Q5 work with K5?
A: Q5 can be plugged into K5 to work as a decoder. When Q5 works with K5, only the USB input and Bluetooth connection work, and other coaxial/fiber/line inputs are invalid.
When Q5 is connected to K5, it cannot follow the K5 switch.
23, Q5 connected to the iPhone work, why is the iPhone's volume adjustment invalid?
A: When the Q5 is connected to the iPhone via USB or Bluetooth, the volume adjustment on the iPhone is invalid. The output of the iPhone defaults to the maximum volume. This is because when the volume of the iPhone is small, it is prone to distortion. In order to ensure the relevant parameter indicators and sound quality, when the Q5 is connected to the iPhone, the output of the iPhone is forcibly set to the maximum.
(Because the output definition of the Android phone is inconsistent, it cannot be set to a fixed maximum value. Therefore, if you are connected to Q5 and Android phones, it is recommended to increase the volume of the Android phone. For reference only)
24, how to know the power of Q5?
A: Apple devices can be connected via Q5 Bluetooth, and the Apple device needs to have the FiiO Music app installed (if not, you can download and install it from the App store). After opening FiiO Music, go to Settings -> FiiO Q5, and you can see the current power status of Q5, as shown below: 
Note: Q5 has a low power prompt. When the red light flashes twice every 5 seconds, it indicates that the Q5 is low.
25, FiiO Music app on the relevant settings of Q5 A: First, you need Q5 to connect to Apple devices via Bluetooth.
1 USB interface switching: Click the “USB interface switching†icon to switch the functions of 2 USB ports;
2 filter options, click to switch between different filter modes. There are 5 kinds, which are steep drop, slow down, short delay and steep drop, short delay and slow down;
3-channel balance: directly drag the middle gray squares left and right to adjust the channel balance;
4 Power-saving shutdown (minutes): The default is 10 minutes of power-saving shutdown time, the maximum can be set to 30 minutes. Set to “0†for “OFFâ€, meaning that the power-saving shutdown function is not turned on. 