FiiO K11 Review

[Lykkedk]

Hi all... and soon (very) happy new year.

(Testing is done with Cosmos ADC-iso and the Cosmos APU (for the unloaded test only - Also I used my DIY Autoranger (SuperRanger) for some of it)

It's my very first review, so bare with me, if I miss something please
Anyway, I didn't find a review of the FiiO K11 (non R2R) DAC/HPA so I thought that I would do one here.
I did "only" test the HPA part, not the PreAmp. out (RCA only) here.

I bought this HPA some time ago, cause I needed something to drive my HifiMan HE400SE (32ohm) can's proberly (they for sure do right)
I can say, that I'm very satisfied with the unit.

Well, let's start with a picture of the thing, along with some pic's of my DIY HeadPhoneAmplifier LoadBox, which is needed for me to do the testing.

I start my testing with an unloaded test to look at the Sinad with (proberly) the best conditions. (With Cosmos APU Notch 998Hz)
-108 / - 107 THD+N, not bad, and waaayyy below my old ears listning level for sure.

So this measurement complies, what FiiO have pronounced also. https://www.fiio.com/k11_parameters

A bit better with SingleEnded. (Better is a nice word, it's for me excellent )

Well, the most important measurement for me is the output level, that the FiiO K11 can supply, if you ask me, I think it's excellent for it's price range for sure.
Also it's more or less, what FiiO pronounced regarding the watt's comming out of the unit until 1% of THD+N

Last measurement is the 6 filters of the DAC, not that I really think it matters, but it's fun to do the measurement (not easy for me, but I'm hoping I got them right ???)

Hope you all enjoy, and hopefully usefull for if someone wan't to buy this DAC/HPA

Comment's are very welcome! - Again Happy New Year ALL here

Jesper.

 

[Biagiod]

Nice first review Lykkedk.
Keep up the good work !

 

[PjV]

Nice review, good to see the specs confirmed.
Can you calculate the Sinad from your measurements?

BTW, I don't want to buy it, I already have the K11

 

[Lykkedk]

Hi @PjV and thanks.

I use a spreadsheet, where I just plug in the number's from REW.
The blue boxes are for the input's taken from REW, rest of them is calculated.
The sinad is the reciprocal of THD+N.
The ENOB (Bit's) are more complicated to calculate, but I figured it all out.
Only reason I use a spreadsheet, is to have the numbers look better and aka' AP dashboard

Jesper.

 

[ahmedpc03]

thanks for the review
graph for filters
i jumst recieved mine, and was worry about some reviews that they mentiond the dac have sibilance issue especialy with filter #3
didnt noticed a big diffrent between filters, iam on firmware 1.29
did you noticed any issue with it?