[gto88]

Ok, to clarify this myth, I did a quick check.
As stated, with the charger, my xd-05 pro can demand 12V when turning on in EXT mode.
With that, I switch to turbo mode, led is in red,
then I turned it off and then turned it back on again, and it is on turbo mode.
All are done in EXT position.
I see no above mentioned issue.

 

[LoneFurrow]

I thought we were past discussing this and you know what I mean. Nevertheless let me clarify once again.
With an USB-C PD charger, you cannot switch on the device in Turbo mode. When you power down and then power up again it will NOT start in Turbo mode. Of course you can switch to Turbo after powering on. But if you want to keep that mode and prevent the device from going back to ECO, you need a 12v DC charger.

We had several pages of this discussion before where everyone has tried this so I assumed we all knew this

Apologies, I had an XD05 PRO on trial last August for a week or so, but only bought one in the last few weeks so skipped about 100 pages of posts. I never use Turbo mode so it doesn't bother me regardless. As you say, more interesting to focus on other topics.

 

[nioh]

Apologies, I had an XD05 PRO on trial last August for a week or so, but only bought one in the last few weeks so skipped about 100 pages of posts. I never use Turbo mode so it doesn't bother me regardless. As you say, more interesting to focus on other topics.

Nothing to apologize. We are all here just trying to help others with information we have on the product so they make good, informed decisions

The more we discuss the better !

 

[nioh]

Ok, to clarify this myth, I did a quick check.
As stated, with the charger, my xd-05 pro can demand 12V when turning on in EXT mode.
With that, I switch to turbo mode, led is in red,
then I turned it off and then turned it back on again, and it is on turbo mode.
All are done in EXT position.
I see no above mentioned issue.

Did you try to disconnect the usb cable, connect it again and then power it on in EXT ? In my experience the EXT mode Turbo only stays as long as you keep the USB-C connected. Once you disconnect and connect it back and then power it on, it doesn’t work anymore. With a 12v DC adapter this always works.

Did you try playing some sound immediately after switching on in Turbo Ext mode with an USB-C charger ? It won’t play any sound until you switch to Charge or Batt mode and then back again to Ext.

We’re just trying to help people who wants to buy the right charger for this. Many of us who have had this device since day 1 have done several of these tests. In the end what you buy is up to you

If you really have an USB-C PD charger that allows the XD05Pro to work with all the above scenarios in EXT Turbo mode then please give us a link to this charger. At least I will try it out. I like having all USB-C chargers. I have like a dozen of them here, most of them 100W GaN chargers.

 

[gto88]

Yeah, I will try it all.

 

[Ferdinando1968]

Ok, to clarify this myth, I did a quick check.
As stated, with the charger, my xd-05 pro can demand 12V when turning on in EXT mode.
With that, I switch to turbo mode, led is in red,
then I turned it off and then turned it back on again, and it is on turbo mode.
All are done in EXT position.
I see no above mentioned issue.

But are you sure you have more than 5V on the USB?
You should use a USB tester or USB cable with voltmeter to make sure.

In my personal experience, the XD05 turns on (almost always) in TURBO mode even with 5V USB, but it doesn't work properly.

For example, in my case the SPDIF input did not work correctly.

I had opened a ticket with XDUOO at the time, and they replied that the device does not work properly when underpowered.

 

[gto88]

But are you sure you have more than 5V on the USB?
You should use a USB tester or USB cable with voltmeter to make sure.

In my personal experience, the XD05 turns on (almost always) in TURBO mode even with 5V USB, but it doesn't work properly.

For example, in my case the SPDIF input did not work correctly.

I had opened a ticket with XDUOO at the time, and they replied that the device does not work properly when underpowered.

Yes, the charger has display for each port showing voltage,current and wattage.

 

[moonbst1]

Tested

Xduoo 05FS1 (12V 2A)
Ugreen GaN (100W)
Dell ISB-C Laptop Charger (5V/3A, 9V/3A, 15V/3A)

Xd05pro can be operated the turbo mode with all power supplies. However 12V output sounds better than 9v, also unit temperature is hotter than 9v operation.

(1) Xduoo 05FS1

(2) GaN 100w charger

(3) Dell 9v laptop charger

 

[Ferdinando1968]

Yes, the charger has display for each port showing voltage,current and wattage.

Tested

Xduoo 05FS1 (12V 2A)
Ugreen GaN (100W)
Dell ISB-C Laptop Charger (5V/3A, 9V/3A, 15V/3A)

Xd05pro can be operated the turbo mode with all power supplies. However 12V output sounds better than 9v, also unit temperature is hotter than 9v operation.

(1) Xduoo 05FS1

(2) GaN 100w charger


(3) Dell 9v laptop charger

So probably something inside the XD05 has been changed since I (and others here) got the unit.

I purchased it immediately as soon as it was put on the market, in August 2023.
Are your units perhaps newer?

Of course this seems strange to me, given that XDUOO itself specifically mentions the external 12V LINEAR power supply to have desktop mode; It doesn't mention a QC or PD USB power supply.
Maybe because they were planning to sell theirs?

Maybe.

https://xduoo.net/product/xd05-pro/

 

[gto88]

So probably something inside the XD05 has been changed since I (and others here) got the unit.

I purchased it immediately as soon as it was put on the market, in August 2023.
Are your units perhaps newer?

Of course this seems strange to me, given that XDUOO itself specifically mentions the external 12V LINEAR power supply to have desktop mode; It doesn't mention a QC or PD USB power supply.
Maybe because they were planning to sell theirs?

Maybe.

https://xduoo.net/product/xd05-pro/

I purchased recently, but I think it is more on the charger than on XD05 itself.
As long as 12V is supplied, it is on desktop mode, I don't think XD05 will know how the power is supplied, right?

 

[Ferdinando1968]

but I think it is more on the charger than on XD05 itself.

Maybe... but I had tested it with various 'smart' USB power supplies, and used a USB protocol analyzer to deduce its behavior.
In the meantime I have acquired other USB power supplies.
I will carry out further tests with these.

As long as 12V is supplied, it is on desktop mode, I don't think XD05 will know how the power is supplied, right?

I'm not sure I understand what you mean..

edit:
but if you mean that the DAC will work with any power supply, as long as it supplies 12V, I think so.

The point is that given the enormous availability of smart USB power supplies (I think it's safe to say we all have at least one), it would have been unnecessarily limiting (commercially) to advertise the need for a 12V linear power supply to achieve desktop mode.

The fact is that if the power supply is to be a smart USB, the device must support the appropriate QC or PD charging protocols not only for charging (which happens) but also for normal use (switch in EXT ), which doesn't happen on my device (at least with power supplies I had tested).

Support for charging protocols is essential to obtain more than 5V from a smart USB power supply, because they are 'locked' to 5V for backwards compatibility reasons.

 

[nioh]

Maybe... but I had tested it with various 'smart' USB power supplies, and used a USB protocol analyzer to deduce its behavior.
In the meantime I have acquired other USB power supplies.
I will carry out further tests with these.



I'm not sure I understand what you mean..

edit:
but if you mean that the DAC will work with any power supply, as long as it supplies 12V, I think so.

The point is that given the enormous availability of smart USB power supplies (I think it's safe to say we all have at least one), it would have been unnecessarily limiting (commercially) to advertise the need for a 12V linear power supply to achieve desktop mode.

The fact is that if the power supply is to be a smart USB, the device must support the appropriate QC or PD charging protocols not only for charging (which happens) but also for normal use (switch in EXT ), which doesn't happen on my device (at least with power supplies I had tested).

Support for charging protocols is essential to obtain more than 5V from a smart USB power supply, because they are 'locked' to 5V for backwards compatibility reasons.

You are absolutely right. An USB-C PD charger will always negotiate 5V supply at startup. The pictures above prove nothing because they only show power while operating, not while powering up. This is the problem.

I think we’ve explained enough. If they’re happy with the way it works let them be. One day they’ll figure out that it doesn’t always work like that or may be they never will. Let’s move on

 

[nioh]

Tested

Xduoo 05FS1 (12V 2A)
Ugreen GaN (100W)
Dell ISB-C Laptop Charger (5V/3A, 9V/3A, 15V/3A)

Xd05pro can be operated the turbo mode with all power supplies. However 12V output sounds better than 9v, also unit temperature is hotter than 9v operation.

(1) Xduoo 05FS1

(2) GaN 100w charger


(3) Dell 9v laptop charger

If you really want to prove a point, try this.

1. Record a video.
2. Set the XD05Pro to EXT + Turbo mode.
3. Power down and fully disconnect the USB-C charger and tester from the XD05Pro.
4. Connect the GaN charger with the tester to the XD05Pro and power it on.
5. Play some sound through the XD05Pro without changing modes.
6. Post the video so we can all see

If this works then like @Ferdinando1968 said may be something has changed in the newer XD05Pro units because on our units this does not work and as he explained it’s how the USB-C handshake works.

 

[Beepat]

I always use my xd05 pro in ECO-mode, but it is also working with my Samsung 25w EP-TA800 USB-C power supply in TURBO-mode.

Tried the Szalayi with @15 but I don't what happens when using power hungry over ears...

 

[Bengkia369]

Anyone installed Ufeel op-amps buffer for your XD05 Pro? Some impressions pls.
I I stalled these on my Aroma Audio A100TB & it's sounds awesome!