Can be both, paint or laser marked. But AD logo should be a square and there should be an additional little pit on the top indicating 1 pin.
So they could be remarked N ones.
No square, no pit... I ordered the board, I will check it when I come back from my holidays.
(Anyway I payed for it just 11€)
Crossing fingers
(Anyway I payed for it just 11€)
Crossing fingers
wow, you just paid the postal fees 😀 ... I paid more because I took the stamps without the lead option !
you could have took the golden vias and without lead option for 7 euros more 😎
how much they charged you fot the ad1862 shipment ? You get them at Digchip ?
how much they charged you fot the ad1862 shipment ? You get them at Digchip ?
you will tell us... but please buy the parts from an authorised distributors : Farnel, Digikey, Mouser, many shops also in GB and Deutschland.
I will buy all the components on mouser. Ad1865 on AliExpress because is the only store where I found it with a decent price.
Pcb on jlcpcb. The shipment cost only 5€ if you are patient.
Pcb on jlcpcb. The shipment cost only 5€ if you are patient.
The model of the polymer caps are United Chemi-Con:
661-APSF160E101MFA5S and 661-APSA100D470MFA5S
i will do another board with different caps...
so far the dac sounds very good! the sound is full and natural, easy to understand the instruments playing separated from each other.
regarding xicon polystyrene caps i have 1nf and 330 pf at home.
It certainly does. More importantly, it reclocks after the isolator. The optional clock board is highly recommended.
good take about UNC, worked with the AFSA iirc : very good better than the nichicons polymer and the dull rubycon siblings with its flappy bass whatever the esr ! .
@ analog-sa : are you sure it is not an asynchronous reclock then just an isolator chip with a powersupply to power the clean side - that is not reclocked cause ndks are before - ?
@ analog-sa : are you sure it is not an asynchronous reclock then just an isolator chip with a powersupply to power the clean side - that is not reclocked cause ndks are before - ?
It'sure. The ndk sda clocks are on the clean side, all fully galvanically separated, and reclocked from the clean side..
This is why inserting a FiFo is completely useless, afterwards.
This is why inserting a FiFo is completely useless, afterwards.
Sources and their power supplies are important for a good sound too
Ah, ok... so different from the USB to I2S Lucian's board. So I assume they don't sound the same. I remember the Lucian's Wave I/O from Luckit.biz sounded better from the uf-l outputt because the isolator chip introduced some jitter. I see also the JLSounds is at mark III board
.
ECdesigns make good streamer thouth it's not diy proce while stay reasonable in price. And Andrea Mori member(s) is going to launch a Fifo that compete with Iancanada and has pcm purpose as he used to love the tda1541A- so assume it perhaps have other pcm options as JLSounds board or Iancanada I2StoPCM.
SDcard readers while not very handy are said to be good as well but I2S : needs the delay network of the Miro1360's board
Ah, ok... so different from the USB to I2S Lucian's board. So I assume they don't sound the same. I remember the Lucian's Wave I/O from Luckit.biz sounded better from the uf-l outputt because the isolator chip introduced some jitter. I see also the JLSounds is at mark III board
.ECdesigns make good streamer thouth it's not diy proce while stay reasonable in price. And Andrea Mori member(s) is going to launch a Fifo that compete with Iancanada and has pcm purpose as he used to love the tda1541A- so assume it perhaps have other pcm options as JLSounds board or Iancanada I2StoPCM.
SDcard readers while not very handy are said to be good as well but I2S : needs the delay network of the Miro1360's board
Last edited:
jitter ... test yourself if you can hear any in this simulation and quess (then click on song title to cover the used jitter 😀)
what does jitter ACTUALLY sound like?
it is jitter in uS, and most USB converters have jitter in pS
what does jitter ACTUALLY sound like?
it is jitter in uS, and most USB converters have jitter in pS
I didn't want async reclockers left out, they introduce jitter in the 10s of nS 😱
Btw USB comes in different flavours, the isochronous type (PCM2706 is one of the breed) has much poorer than pS jitter. That number would be for a good async USB interface.
PCM2706 and 7? has jitter about 500pS (not my research, I read it somewhere, somebody found out) ... I wouldn't put it for delta sigma 😀
Sounds better than I imagined, I have some here I could see if I can measure on my 'scope. About 10X worse than S/PDIF then.
do the measurement if possible, how much pS or nS do you consider as the limit for 16bit/44.1kHz R2R with direct latch, vs. delta-sigma?
the jitter requirement has to be more demanding with oversampling (or with higher audio frequency), right?
the jitter requirement has to be more demanding with oversampling (or with higher audio frequency), right?
It's very easy to check out the documentation...
http://jlsounds.com/uploads/I2SoverUSB v.III.pdf
and the Mk III board is functionally the same as the Mk II, it just has a more powerful processor and some additional refinements
Hi,
I try to understand how to calculate the output impedance. In a previous post you said that you can set it with R10/R11 resistors. Could you explain me how to do the calculation please?
Which things I have to keep in consideration to set the right impedance? I mean, if I want to connect this DAC directly to a power amp I have to set a different impedance value if I will connect it to a preamplifier?
thanks