Oh definitely a worthy upgrade from the DX50 to the DX90 . It's got a lot of power and a really low noise floor. I believe that is part of the reason for having dual-mono DAC vs single-stereo DAC, at least from reading about the iFi micro the reason they have dual DAC design is to reduce noise...

Hi all   I received the DX90 a few weeks ago and have been allowing it to burn-in as stated on the forums... apparently requiring 400 hours. Sometimes I use the burn-in cable provided and at other times I plug in the GR07 BEs and let them burn in too. I've been able to enjoy a wide variety of...

Hi cel4145,   I went to audition the DX50 and DX90 at a local store and I came away impressed with both units with the SQ. The only gripes with the DX50 is the little hiss when not playing music which is non-existent on the DX90. I disagree with those calling this a "very warm" sounding unit...

With this I meant the 3.5mm Line-input which is on the front panel of the iDSD, that I believe allows one to only use the amp of the iDSD and not the DAC.     So when it takes the USB input then outputs the audio through SPDIF which circuits does this engage? I'm assuming the analogue...

I am aware that DAPs have coaxial digital output but the reason I was considering a DAP having USB output is that I believe USB input would be better than SPDIF input. Of course I don't know this to be fact, the reason I was thinking this is that the iDSD has the USB purifier. Furthermore as per...

Thanks cel4145 for the advice. I've been reading the reviews and impressions page for the DX90 and DX50, FiiO X1, X3 and X5 but I can't figure out what will be the best match with the GR07 BE.   How would you describe the sound signature? I read one review which described it as: "Very warm and...

Thanks for the tip , I was just reading this link and I wondered the same thing. It will save me a fortune, however I still would like good SQ to pair it with the GR07 BEs. So that might mean the DX50 would be a good fit? Any DAPs you would recommend?   I was also reading this...

Hi All,   I am a new member at Head-Fi but a long time observer and have gained a lot of insight and taken many recommendations. Head-fi is the reason I own:   IEMs (used 8 hours a day at work): VSonic GR06 (purchased 2012) VSonic GR07 Bass Edition (purchased March 2014)   Thanks to...