Is the power socket earthed?
[FiiO M17] Dual ES9038PRO, dual THXAAA-788+, dual power supplies, 9200mAh battery, 2 volume control modes
gannjunior
100+ Head-Fier
Hi Ichos!
to have a listening in the garden, I was using my 220v portable battery power generator, so I was not attached to the main home current socket, that I'm using now and I don't experiencing any buzz....so you are right, since, of course, portable generator does not have the earth!
PS I sold a few time ago DX320 to buy M17...
M17 is another league. and it's not a matter of power.
maybe it's something concerning the ROHM chip vs Sabre. In fact when I listened for the first time DX320 - coming from 220MAX - I was not convinced since I appreciated more the 220MAX sound: soundstage and in particular instruments positioning in the space, layering, separation and nuances too. All I mentioned is further enhanced trough M17, where it is already absolutely appreciable in battery mode.
teaandfizzies
New Head-Fier
My M17 went dead. But now lives again and is perfectly fine. If anyone else has this happen, this was Fiio response-
When you encounter the situation that the product cannot be turned on and cannot be charged, please follow the following methods: 1. Try to replace the charger and charging cable; 2. The battery of your device may be in an over-discharged state and requires a small current flow. It is recommended to connect the computer to charge the machine for more than two hours and then unplug the USB cable to see if it can be turned on; 3. If the above two steps still cannot be turned on, you can also try to let the machine stand for two to three days. Then recharge to see if it can be restored. Because sometimes the machine may be stuck in operation, it can be restored to normal after the battery is powered off.
I gave up and stopped trying to get it to work. A couple of days later it started charging like normal again. I understand this to be a rare occurrence but if it does happen don’t panic and follow those steps, making step one the last step as I didn’t need a new charging cable.
When you encounter the situation that the product cannot be turned on and cannot be charged, please follow the following methods: 1. Try to replace the charger and charging cable; 2. The battery of your device may be in an over-discharged state and requires a small current flow. It is recommended to connect the computer to charge the machine for more than two hours and then unplug the USB cable to see if it can be turned on; 3. If the above two steps still cannot be turned on, you can also try to let the machine stand for two to three days. Then recharge to see if it can be restored. Because sometimes the machine may be stuck in operation, it can be restored to normal after the battery is powered off.
I gave up and stopped trying to get it to work. A couple of days later it started charging like normal again. I understand this to be a rare occurrence but if it does happen don’t panic and follow those steps, making step one the last step as I didn’t need a new charging cable.
Definitely NOT normal. You may have a faulty unit.
I decided to pull the trigger on my first set of planars to pair with the M17. I've been reading up on many for awhile and kind of temporary lost interest. I jumped online tonight and for whatever reason and without delay..... purchased the Aeon 2 Noire on a whim. 
Now for a 4.4 cable. 
Now for a 4.4 cable. 
duffer5
100+ Head-Fier
Go with Hart Audio. You will not regret.I decided to pull the trigger on my first set of planars to pair with the M17. I've been reading up on many for awhile and kind of temporary lost interest. I jumped online tonight and for whatever reason and without delay..... purchased the Aeon 2 Noire on a whim.
I did but I went with the "replacement" cable. It was the only one in black as all the others were grey or red. I'll eventually buy a really high end cable but I hope this will do for now!
https://hartaudiocables.com/collect...mr-speakers-headphones?variant=43002032390365
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Ben86
500+ Head-Fier
- Joined
- Jun 24, 2015
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Does anybody know where to buy Fiio 12V AC-DC adapter for M17? 
I have searched the web but it looks that it is not available to purchase separately anymore...
https://www.fiio.com/newsinfo/629693.html
I have searched the web but it looks that it is not available to purchase separately anymore...https://www.fiio.com/newsinfo/629693.html
You can buy any 12v DC adapter, make sure that it is at least 2.5A, ideally 3A but, I have a 2.5A in my bedroom and it work just fine with no discernible loss in sound quality.
burkerg
New Head-Fier
- Joined
- Jun 15, 2006
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I purchased one of the first M17 units that was available at Amazon upon release. I’ve never gotten DAC mode to work with any device. I’ve tried with a PC, two Macs, three iPhones, and four iPads. Nothing will establish a connection in USB DAC mode. Firmware is updated (1.0.6).
I finally decided to dig in and try to sort it out, and I’ve reached out to FiiO support. They have been less than helpful. They told me to update the XMOS firmware with a new .bin file, but when asked for instructions on how to do that, they sent me other suggestions to try, rather than telling me how to update the XMOS. The other suggestion was a new firmware in a .rar file, but the .rar file was empty. Super duper helpful.
Through some digging on head-fi, I found an earlier post with a link to download a zip file that contains a firmware update utility called FiiODfu.exe. I’ve downloaded that utility and tried to connect my M17. It doesn’t recognize the device. My computer will only connect to the M17 for file transfer. I’ve got the FiiO driver installed. I tried in USB DAC mode, Android mode, and Pure Music mode. I’ve tried multiple cables, multiple USB ports on the PC, and I even tried both USB ports on the M17. Nothing gets my computer to recognize the M17.
I also tried placing the .bin file on the M17 and navigating to it through the local firmware update procedure, but the M17 doesn’t see the .bin file. I tried in local storage on the device and on an SD card.
Has anyone faced and resolved a similar issue? Thanks very much for any advice!
Rob
I finally decided to dig in and try to sort it out, and I’ve reached out to FiiO support. They have been less than helpful. They told me to update the XMOS firmware with a new .bin file, but when asked for instructions on how to do that, they sent me other suggestions to try, rather than telling me how to update the XMOS. The other suggestion was a new firmware in a .rar file, but the .rar file was empty. Super duper helpful.
Through some digging on head-fi, I found an earlier post with a link to download a zip file that contains a firmware update utility called FiiODfu.exe. I’ve downloaded that utility and tried to connect my M17. It doesn’t recognize the device. My computer will only connect to the M17 for file transfer. I’ve got the FiiO driver installed. I tried in USB DAC mode, Android mode, and Pure Music mode. I’ve tried multiple cables, multiple USB ports on the PC, and I even tried both USB ports on the M17. Nothing gets my computer to recognize the M17.
I also tried placing the .bin file on the M17 and navigating to it through the local firmware update procedure, but the M17 doesn’t see the .bin file. I tried in local storage on the device and on an SD card.
Has anyone faced and resolved a similar issue? Thanks very much for any advice!
Rob
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You have to hear it yourself otherwise you won't believe it 
NOMAX
NOMAX
The 110 volt version of FiiO's PL50 linear power supply doesn't appear to be available anymore for the last few months. @FiiO Has this model been discontinued or will it be available for purchase again?
Hi everyone. Can someone please explain me why it suggests me to switch of battery charging if it is already in off mode and DC power option is chosen?
Low output power option, non-balanced socket, but the "High temperature" alarm appears in about 30 minutes after listening starting... What is the problem here?
Thanks.
Low output power option, non-balanced socket, but the "High temperature" alarm appears in about 30 minutes after listening starting... What is the problem here?
Thanks.
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Are you sure battery charging is turned off? That is, if you pull down the notification tray does it show the icon for "Disable battery charging" is activated?Hi everyone. Can someone please explain me why it suggests me to switch of battery charging if it is already in off mode and DC power option is chosen?
Low output power option, non-balanced socket, but the "High temperature" alarm appears in about 30 minutes after listening starting... What is the problem here?
Thanks.
FYI: I tend to take these warnings very seriously after I had similar warnings then a short time later my battery swelled evidently due to the high temperatures requiring a replacement. Not sure if this issue with the battery is still a problem though as mine was a pre-order and one of the first ones sold.
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yes, you can see that message also in a photo I posted above.
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