I was able to successfully install the K9 Pro AKM Bluetooth Firmware V1.31 to my K9Pro (AKM), but only after updating the FiiO Control App to the most recent version on my Android phone. I did use the online upgrade option. Prior to updating FiiO Control, even the Local Upgrade option would...

96k is the max for toslink see K9 Pro's signal input and output method description

The answer to your question is yes; the K9Pro has both XLR and RCA outs that can be connected to another amp/dac (assuming corresponding inputs on the external device.) Whether this arrangement will produce "best of both world" results is open to debate. I have the K9Pro connected via both xlr...

Yes, I did have signal indicated by red light from optical and input was switched properly to Optical on K9Pro, but my problem apparently was not the K9Pro itself. I have been able to confirm the optical input does indeed work properly on the K9Pro by connecting a different optical source, so...

Thanks for replying - I have no mode options (on TV menu,) only setting is to use TV speakers or "Audio System" with optical out (PCM) or L/R (analog) RCA-out. If you are referring to some setting for the K9Pro to switch modes from Dolby to stereo, then I would have no idea where to find that...

Question regarding the Optical Input of the K9Pro; I am trying to listen to my older Sony XBR TV via the TV optical out that according to its specs is in PCM/Dolby format. When connected to the K9Pro via optical input/Optical selected as source, I only get noise/static. I have tried different...

FiiO website Desktop Amps Faqs has the descriptions listed here.

To Set the default sample rate and bit depth in Windows - go to Settings/System/Sound. After turning on the K9Pro, under Output, select Output Device as "Speakers (FiiO USB DAC)," then click on Device Properties in the Output section. On the device properties page under "Related Settings,"...

Another question regarding the firmware update process: For those of us who have installed the v5.22.0 Beta USB_DAC_Driver, does this fact affect the process in any way? The instructions only reference the v4.47.0 driver as a pre-update requirement.

Yes, that link to firmware on the page you referenced seems invalid. However, there are links to firmware download and instructions for upgrading in the "Video about upgrading the firmware:" (youtube). I did download the firmware - but did not attempt an upgrade. It is confusing to me that the...

Windows Driver version 4.47.0

I've had my K9 Pro since early October, ordered through the FiiO store on Aliexpress -> Illinois. Took about 10-11 days to get it. K9 Pro - AliExpress

Thought I would post a short review of the FiiO SK-BTR5 case that I obtained through Penon Audio. Besides the expected wait to receive the case, it arrived intact and well packaged. The BTR5 fits well in the case by sliding it into the open top of the case while orienting the screen to appear...