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Headphoneus Supremus
Still listening and testing out my DP-X1 and will share impressions soon. However, I experienced a few "quirks" that may help some folks if they saw the same:
Some Minor issues
- I recommend you erase/format your SD card inside the DP-X1. I did a FAT32 format and copied 350 GB of music across 2 x 200 GB sd cards and when I plugged them into the DP-X1, it just wiped out all files. I had to format with the DP-X1 and after that I could use my Mac's SD card slot or AFT to copy files to the sd cards without issue. Mac users, you should use Blue Harvest to remove all of those extra Mac OS hidden files.
- SE output auto detects. That is your output mode can be ACG or Balanced. As the instructions state, once you plug in an SE cable it will automatically switch to SE. However on my unit the fit was bit tight and I did not press down all the way. Normally when you don't plug all the way in, you lose a channel. The DP-X1 behaves differently. I got sound out of both channels, but the sound was really off - very thin and missing mids. If you don't see the headphone icon in the upper left corner, you have not fully inserted the SE cable. Perhaps this explains some folks who state "awful" sound after firmware update.
- I have about 11K tracks on both my combined cards. I have no idea how the DP-X1 scans these - on power up or "sync" in the app. I initially saw weird behavior where only some albums showed up in the player and also AFT utility. I finally removed my SD Cards and rebooted to make sure there was no caching of the files. Once I saw that the track list was clear in the player, I put "Sync" to auto and shut down. I reinserted the cards and powered back up. I did not see any notice of media scanning during boot (I did see this before though), but when I launched the player it showed the syncing message. I walked away for about 15 min and came back and the message was gone and all my files displayed in the player and in AFT. I think there is still some background indexing going on - see my battery life note below. Lastly, every time I shut down and power up, it takes about 15 min wait before AFT shows all the folders in both cards. It's sequential, I will see SD card 1 first, then SD card 2. Right after power up, neither display their contents in AFT.
- On both Mojo and CDM, simply plugging in and powering up the DAC/Amps auto detects in the player and I get a message if I want to connect to the USB device. Once I select yes, it shows all of the possible sampling rates and works great. You have to make sure the "USB Driver is Valid" option is ticked in settings.
- Battery life is horrendous in the first 1-2 days of use. This is normal for Android phones. I suspect there is a lot of background stuff going on and some data gathering for smart power management. I expect full battery life to settle in a week or so. Right now I am getting about 5-6 hours using USB OTG.
- You don't need to add a Google account unless you want to install other apps from Google Play. I don't plan to but other may.
- And a d'oh moment - The black box that the DP-X1 ships in has a magnetic clasp on one of the sides. Lift up and open. Don't cut it up like I did. There is no visual indicator which side the clasp is on and which way it opens so try all possible orientation.
Some Minor issues
- As a DAP, the DP-X1 doesn't seem to have a native 44, 88, or 176 sampling rate. All my files in those sampling rates go up to the next 48 kHz multiple. However in USB OTG mode, it does support the native resolution of all the tracks. Not a huge issue, but odd to say the least.
- I am unable to connect to the 5 GHz wifi channel so have to drop down to 2.4. I am using an Apple Airport Extreme. Again, not a major issue, but the specs state otherwise.