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Headphoneus Supremus

Do the RCA ports on the back support pre-out or only line out?
I want to connect two sets of speakers to both RCA and XRL as pre-out.
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HI, it supports pre-out. There is a knob in the front panel and you can set it to Preout or LO.
Do the RCA ports on the back support pre-out or only line out?
I want to connect two sets of speakers to both RCA and XRL as pre-out.
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The new main controller firmware V183 and MCU firmware V87 for K17 are now available!
K17 firmware download link: https://forum.fiio.com/note/showNoteContent.do...
How to upgrade the firmware for K17:
https://www.fiio.com/newsinfo/998792.html
Note:
1. Please update the FiiO Control APP to latest version first. Download link: https://forum.fiio.com/note/showNoteContent.do...
2. When using Link Control function, please make sure that the mobile phone and K17 have connected to the same Wifi network. Set the K17 in local playback mode. Then go to FiiO Control-Add a new device-Player, select K17 to control.
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Will the current version of the iOS Fiio Control app work with the K17 (before or after the firmware update)?The new main controller firmware V183 and MCU firmware V87 for K17 are now available!
K17 firmware download link: https://forum.fiio.com/note/showNoteContent.do...
How to upgrade the firmware for K17:
https://www.fiio.com/newsinfo/998792.html
Note:
1. Please update the FiiO Control APP to latest version first. Download link: https://forum.fiio.com/note/showNoteContent.do...
2. When using Link Control function, please make sure that the mobile phone and K17 have connected to the same Wifi network. Set the K17 in local playback mode. Then go to FiiO Control-Add a new device-Player, select K17 to control.
![]()
The new main controller firmware V183 and MCU firmware V87 for K17 are now available!
K17 firmware download link: https://forum.fiio.com/note/showNoteContent.do...
How to upgrade the firmware for K17:
https://www.fiio.com/newsinfo/998792.html
Note:
1. Please update the FiiO Control APP to latest version first. Download link: https://forum.fiio.com/note/showNoteContent.do...
2. When using Link Control function, please make sure that the mobile phone and K17 have connected to the same Wifi network. Set the K17 in local playback mode. Then go to FiiO Control-Add a new device-Player, select K17 to control.
![]()
@FiiO Updated to the latest V183 firmware. But still can't update MCU firmware just like last time via MacOS. The firmware update says it would work but it still doesn't. PLEASE help with the MCU update. Thank you!The new main controller firmware V183 and MCU firmware V87 for K17 are now available!
K17 firmware download link: https://forum.fiio.com/note/showNoteContent.do...
How to upgrade the firmware for K17:
https://www.fiio.com/newsinfo/998792.html
Note:
1. Please update the FiiO Control APP to latest version first. Download link: https://forum.fiio.com/note/showNoteContent.do...
2. When using Link Control function, please make sure that the mobile phone and K17 have connected to the same Wifi network. Set the K17 in local playback mode. Then go to FiiO Control-Add a new device-Player, select K17 to control.
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I took the wording that after this update, it will work on Mac. ("Subsequent")@FiiO Updated to the latest V183 firmware. But still can't update MCU firmware just like last time via MacOS. The firmware update says it would work but it still doesn't. PLEASE help with the MCU update. Thank you!
Hi, need to upgrade the fiio control app in your iOS devicesWill the current version of the iOS Fiio Control app work with the K17 (before or after the firmware update)?
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Hi, sorry, it will take effect in subsequent firmware versions.@FiiO Updated to the latest V183 firmware. But still can't update MCU firmware just like last time via MacOS. The firmware update says it would work but it still doesn't. PLEASE help with the MCU update. Thank you!
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Hi, We fixed two special characters(&,^) issue in last firmware. May i ask what is the special character you mean?Wifi password with special character STILL not fixed.
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Thank you for your reply. I deleted the Fiio Control app from my iPhone (iOS 18.4) and reinstalled it fresh from the Apple app store. My iPhone and my K17 are on the same network - iPhone connected to router WiFi, K17 connected to router ethernet. I have also tried both connected and disconnected Bluetooth. I also updated to firmware V183 and MCU firmware V87 (which went well)Hi, need to upgrade the fiio control app in your iOS devices
Hi, We fixed two special characters(&,^) issue in last firmware. May i ask what is the special character you mean?
Dear friend,Thank you for your reply. I deleted the Fiio Control app from my iPhone (iOS 18.4) and reinstalled it fresh from the Apple app store. My iPhone and my K17 are on the same network - iPhone connected to router WiFi, K17 connected to router ethernet. I have also tried both connected and disconnected Bluetooth. I also updated to firmware V183 and MCU firmware V87 (which went well)
The K17 is not listed as a "compatible device" and the Fiio Control app is unable to find the K17. Any suggestions?
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Dear friend,Yes, I saw that you ONLY included & and ^ - BUT my special character is neither of these 2.
Why don't you include the whole keyboard special character list??? Why just address 2 special characters?
`~!@#$%^&*()_+-={}[]|\:";'<>,.?/
It's a shame - my el cheapo Hiby R1 connects to my wifi with no issues - but your K17 can't do this?
Come on FiiO!!! Don't try to do shortcuts.![]()
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