1. Check that the volume setting is above 0.

2. Check that the earphones are plugged in properly and no debris is obstructing the port connection.

3. Check if the music file is corrupted.

4. Verify that the audio settings have been properly set. (Balanced out, line out, etc.)

USB TYPE C version.

KANN - USB 2.0

SP1000 - USB 3.0

* KANN and SP1000 use same parts, but its performance is different because of CPU Performance.

Wi-Fi Connection issue check points:

1. Make sure your router is on and in range

2. Make sure Wi-Fi is on and the network is showing

3. Check for Wi-Fi network issues, Make sure the router is connected to the modem and turned on.

4. If there is problem, Please delete the existing wireless router connection information and reconnect.

5. Restart router and device to see if the issue is resolved. Also check it with other devices or router.

1. When the OTG cable is connected, automatic activation of the 'External USB' icon is the specification? -> Yes

- The 'External USB' icon is activated and it is normal operation.

- Regarding of SP1000/SE100, they use same Interface, their 'External USB' icon is activated automatically too.

2. When connecting with a AK RIPPER/MKII, SR15 cannot be charged (NEXEL) -> It is specification.

- SR15(using NEXEL) officially does not support charging while connecting with AK RIPPER/MKII

3. Cannot disable 'External USB' -> It is specification.

The warranty period for all the products sold which is presented in English is one year from the date of purchase. However, every other item except the main body will be classified as accessories, and in this case, the warranty period may be different.

The service regulations about the number of LCD bad pixels (dead pixels) are as follows.

In case of bad pixels, the person in charge checks the LCD accurately,

Check whether it is defective, and then do LCD free replacement or LCD replacement with payment.

The replaced LCD may also have defective pixels,

And will be handled in the same way as below: