The r2r-11 has a very high price/peformance value than many others, not just only very great for audio beginners,but great for many audiophiles too.

If i buy the used set can i changed the board by myself?

Wonder if there's a big or just a very small different or even can't noticeable on the 2019 version,the website state that it reduce the DSD noise.I need to know the difference because i can either choose a new one or a very lightly used set for half of the new set price.

Yes, I'm planning change the muses02 to lme49720ha,which are very well reviewed or maybe lme49990.yes I'm finding the best sounding dual channel op amplifier.

Hi guys,im I'm doing some upgrade project with my preamp,does anyone know if a bipolar opamp can just directly replace by jfet opamp? Because I've read alot that jfet opamp sounds better than bipolar opamp,is it true?because they have much lower noise.

Can i replace two dual opamp to two single opamp?

Is this better than the ada4637? Although they have the different prices,not sure about the sound but ada4637 seems have lower noise,not sure the other,and is a dual opamp can replace by a single opamp?

Thanks for the help guys,i personally think that a dac section is most important for me,and i don't travel alot,and in car i only use bluetooth connection because for the ease of use,no need any wire.

One of the reason why i want to change is because i just have a new hifi rack and not really need portable dac anymore because nowadays a smartphone also have better sound quakity than older model.And i can try to upgrade those caps in a dekstop system that a portable cannot do.

Most important for me is the dac section,using jvc ha sw 02 now,not a power hungry headphone,the ifi itself have a really really powerful headphone amp,but i don't really need it,still can use a external headphone amp if upgrade to a power hungry headphones.What do you mean by have a more...

Yes,it is really worth especially from a high end audio company.Gotta try them later but have to drive for few hours.

Thinking sell my ifi micro idsd and buy this...is it worth?In the r2r 11 inside have a jumper to adjust the sound characteristics right?can select neutral or warm,does anyone here tried it?does their warm really have warm sound like tube or a pure class a amplifier?

I know,gotta test it again when i get my laptop back.

When you start the first boot?does it need very long time to load the library to get those hi res and dsd file?

I think it's m4a apple lossless.

No,im I using a usb reader with a sd card,when start up it only comes up 16bit file and lossy music files all hires and dsd file can't find.

So a ifi idefender or purifier can make a pc also works same sq as pi3b+?I don't know why,I can't find the file,I really give up because i can't get any help.

Just crurious,the volumio and a normal pc(laptop or desktop) using the same external dac,does it really have different in sound quality? although playing the same file

Hi,do you have try to play the dsd and 24bit hi res file?i have a pi 3b+ too and using volumio,when i select my music folder i cant find any dsd and 24bit file,only 16bit and lossy music file only,with a ifi micro idsd.

I agree on that,the china company always have a much lower profit with their product compare to uk&us product, I'm not sayigs they are over priced but i think that the ifi micro idsd cost much is brcause of the huge battery capacity and powerful headphone amplifier which I not really needed...

I don't really want the DSD512&DSD256(I have only one for test)it takes too much space...

I buy it cheaper because it's a display set,so ir really worth to buy,but this audio gd r2r-11 really impressed me when do the first listen.

Because the r11 are in my budget...so thinking want to upgrade it,maybe next time i will compare the r11&my micro idsd.

What do you mean?can you explain it?

It works well to play dsd when i try the DAC,maybe firmware need to update?