Quote: You should prepare yourself for some kind of a betatest of the 901's firmware, because the company is not large. We had a betatest of dx100 FW from 1.0.3 till 1.1.7. And then iBasso worked mainly on the sound. In 901 the main problem is two DACs on board in a non desktop body. The...

Quote: Why is that?

Quote: are the specs out yet? :)

Quote: of course I meant to say "imo". But I am sure you can hear the difference, if you try. I also have at home a HM-801 with symmcard amp (the best amp for 801 out there). And IMO the 801 DAP if powered with a good amp with close to zero impendance provides an opportunity for comparison...

Quote: 1.2.7 lacks atack, weight and contrast in timbre. Everything sounds clear, airish but monotonous. But in 1.4.2 everything sounds superb.

Those who need usb charging, try reading about an upcoming USB 3.0 SuperSpeed upgrade.

Quote: Nope.

Quote: try a factory reset

Quote: If he has just updated the SW, the reason is SW 100%

Quote: Turn off dx100, hit the reset button. Turn on with card inserted. Try. If it doesn't help, try formating the card via android on the dx100. If doesn't help, try recovery.

AnakChan, we don't know, if the OPamps are sandpapered off in the late batches of dx100. The only way to find out - is for someone to look inside. But R10 is a product for Japanese market, and there is as I understand a different marketing approach. At the early stage of product promotion...

AnakChan, NP, the comparison will stay in the R10 thread. But for my fellow player.ru users the contens of R10 are also a proof of the usage of OPA 627 in dx100. I wouldn't underastimate it. Personally the question for me is the OPA amp used after the DAC in dx100, is it OPA627 or OPA827?

AnakChan, you forgot the pictures    R10   R10 OP after DAC   DX100

Quote: Your pix were the first I saw in the internet. We were discusing them on a russian forum player.ru a year ago.   The information about 627 after DAC comes from one russian engineer from city Novosibirsk. He made a HI FI player Alexmod before the appearance of HM801. He used...

Quote: in dx100 it is also 627+634 at the phone apm section. But I was talking a about the OP after DAC, but before the phone amp section.