Hi to all i have some Fiio products but never had any portable dongle from them. So i bought KA13 100 euros are great price for this , nice packaging it has all the cables inside i like that they are braided and have adapters for phone,pc,apple, my other dongles that was way more expensive had to buy them extra.
So PC Connection was driverless , my Fiio Control panel for my desktop Fiio dac amp find it fast and everything worked great , then i connected to my Android 13 phone a Sony V find it fast and play the sound directly no problem at all. Android app find it also fast and there are no EQ adjustments but only Low pass filters, there was some problems for example when i am on volume menu and move up and down didnt change on the fly i had to go back to home and back again to see the change and some times when i did that app crashes. But anyway it doesnt do anything more that filters so...
I have tried some of my headphones HD600,650,660s , Sundara, He 400se ... everything runs great with a lot of power and honestly HD660s work ok on None Desktop mode and even on SE. Using Balanced 4.4 also worked without problems power was enough on all my HD 6 line .
Connection on both 3.5 and 4.4 is tight no Connection problems at all , volume up and down buttons are stiff thats amazing because when i have it on my pocket doesnt pressed at all. Overall is amazing for the price .
My only problem is the Sound is very Bright , and to me its not normal compared to Fiio k5pro , K5proess, Ifi Micro black, Dragonfly red, THX onyx , and other dac amps that i have, I have tried on both 3.5 and 4,4 and also change the cables on all HD 6 line and also keep listening yesterday the shame song an all these dac amps that i said and i am sure its brighter that the others . I am not an expert to say what is correct or no but to my ears is brighter.
When i got it it had Firmware 0.12 and before i even listen it i update to 0.15 , So is there any solution ( for me and my taste) to make the sound warmer ? Use different firmware or even make the sound Warmer Via Android app and Low Pass filters ( what is the warmer with lower treble filter ?)
Last question is , if we change low pass filter inside the app , and then connected to different phone or pc , does it keep the selected filter or it goes back to default ?
Sory for all these questions , i wish best Christmas to all , any help and reply appreciated !!!