[jaxz]

Thank you for the useful information. For the sake of interest, I got acquainted with the opinion of the aforementioned specialist about the D50 model. The review and conclusions once again mention the "bright" sound, even very, especially at high frequencies. Low frequencies are good. And again, "brightness" is indicated for this brand! My choice in favor of the "detailed and crystal clear" sound of the K9 Pro is obvious. I hope the modest "660's" won't spoil it too much

I also have the 660S but still don't plug it on the K9... I will do some listening tonight

 

[ATimoff]

@jaxz Hi. I would appreciate your feedback on listening to the 660s. A relative bought an 800s, but for some reason continues to look for sound in other headphone models. Is there really anything better for their cost? And another request, is the misunderstanding with 16 bit in the general sound mode solved (Win10)?

 

[Miles Gen]

También tengo el 660S, pero todavía no lo enchufo al K9 ... Escucharé un poco esta noche

Escuché el 660 con el k9 y maravilloso exquisito, suena realmente muy bien

 

[ipaddy]

Does it come with a remote volume control?

I really wish it had a remote volume control. Now I have to sit right next to it always, and can't relax in a couch or chair.

 

[ipaddy]

No, It will not come with a remote control, but it has an APP, just like our other products

The app does not change volume. Pity.

 

[ipaddy]

Ok.
One small query : will the RCA lineouts switch off/bypassed as soon as a headphone jack is plugged in ( unlike the k5 pro )?

Also 1.5 w single ended seems just like the k5 pro. It’s single ended out put is underwhelming for the Heddphone and I have to switch to high gain to get some oomph out of that headset via the k5 pro. Not a desired sound quality

So I am hoping I can get enough juice out of the balanced outs of the k9 pro for my heddohone/hd800s without having to go high Gain

Seems that for even slightly power hungry headphones one has to switch to high gain, and turn that knob. Not a great thing.

 

[jaxz]

@jaxz Hi. I would appreciate your feedback on listening to the 660s. A relative bought an 800s, but for some reason continues to look for sound in other headphone models. Is there really anything better for their cost? And another request, is the misunderstanding with 16 bit in the general sound mode solved (Win10)?

The tonality of the 600S obviously mantains. I always felt that the sound of the 660S had a graininess that detracted from the experience. Now it is much less obvious, it is almost no longer present.
Clarity and instrument separation is greatly increased from the 4.4mm jack. The sound is more airy and detailed.

The 16 bits only issue on Win 10 mantains

Cheers!

 

[jaxz]

Escuché el 660 con el k9 y maravilloso exquisito, suena realmente muy bien

Efectivamente, el sonido es muy detallado y claro. Es una muy buena combinación. En mi caso una mejora notable desde el combo D50/ Ember.

 

[jaxz]

Seems that for even slightly power hungry headphones one has to switch to high gain, and turn that knob. Not a great thing.

I know everyone hears different. In my case, for my 300 ohms Senns, middle gain - 4.4 mm - at 12 o clock its very very loud, almost unbearable.

 

[mikedemunck]

@jaxz Hi. I would appreciate your feedback on listening to the 660s. A relative bought an 800s, but for some reason continues to look for sound in other headphone models. Is there really anything better for their cost? And another request, is the misunderstanding with 16 bit in the general sound mode solved (Win10)?

I also use the K9 pro / HD660s with the Ifi Zen Stream as a source. I love the combo. Detailed, clear sound, with a great soundstage. Couldn’t be happier.

 

[zibble]

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," click on Additional Device Properties.

In the Speakers properties dialog which appears, click on the Advanced tab and select The Default Format using the drop down box, then click "OK".

[Input Supported by K9 Pro]
K9 Pro supports USB input, optical input, coaxial input, line input, Bluetooth input, a total of 5 input methods, through the front panel INPUT button to switch the input


The highest sample rate supported by each input mode
USB: 384kHz/32bit, DSD256
Coaxial: 192kHz/24bit, coaxial does not support DOP
Optical fiber: up to 96kHz/24bit
Bluetooth: LDAC protocol supports up to 96k
Line: analog signal, pure amplification, no decoding

 

[grasshopperuk]

For anyone interested, Amazon UK have the AK version, mine arrived today and it passes the authenticity check.

 

[looki look]

The app does not change volume. Pity.

I've got with the beta firmware a new app version to test too. And with that I have a volume control in the app and I can control it. (android 8 and 11 worked). So just wait until the new app version comes. In the 2.6 android version I even did not see a volume control in android 6 and 8. and android 6 could not connect. but new version is fine.

 

[mikedemunck]

I've got with the beta firmware a new app version to test too. And with that I have a volume control in the app and I can control it. (android 8 and 11 worked). So just wait until the new app version comes. In the 2.6 android version I even did not see a volume control in android 6 and 8. and android 6 could not connect. but new version is fine.

That’s awesome. I hope Roon will also be able to control the volume… that would be amazing…

 

[ipaddy]

To FIIO:

I scratched off the coating on the back of the box, as I wanted to verify authenticity, and also ensure that I have the 4499 version (which cost $699). I scratched very carefully with plastic, but even so, more than a few numbers are not clear at all. And when I try entering numbers into the website of FIIO, I don't even get a response as to whether I guessed right or entered the wrong numbers. Can you help?