[CharlyBrown]

I thought about adding some kind of (very short) 4.4 extension that stays in the XDuoo and I only plug my cables into this extension. Is there something like that available?

I suspect that only a short extension cord
https://www.amazon.com/NewFantasia-Balanced-Headphone-Adapter-Extension/dp/B09SF7LP4R
or making an adapter yourself



A&K SP3000cu -> Grand Maestro - Multiverse Mentor - Annihilato

Ha, you gave me an idea. Thank you!! (I know a cable maker…)

 

[flyingcoin]

The news just updated on xdooo Weibo seems to be the DAC engineering board for R2R

 

[Kallbo]

Nice, my 05 with the AKM board just came in to sweden. Hope i`ll get it next week.

 

[Loftprojection]

The news just updated on xdooo Weibo seems to be the DAC engineering board for R2R

This could be a game changer if it sounds great. It will be the first transportable R2R dac/amp. It’s about time, more and more DAPs have an R2R DAC now so the size excuse doesn’t make sense anymore.

 

[basisunus]

The news just updated on xdooo Weibo seems to be the DAC engineering board for R2R

Looking at the capacitor size, it's not a module that fits the current DAC profile. Maybe just a test board installed externally. It could be a long way to go judging by the time from the announcement of the XD05 Pro to its actual release.

 

[Cecala]

Looking at the capacitor size, it's not a module that fits the current DAC profile. Maybe just a test board installed externally. It could be a long way to go judging by the time from the announcement of the XD05 Pro to its actual releas

This could be a game changer if it sounds great. It will be the first transportable R2R dac/amp. It’s about time, more and more DAPs have an R2R DAC now so the size excuse doesn’t make sense anymore.

...............................and combined with a discrete amp module (hopefully incoming) would be perfect.

 

[quaddac]

AKM vs ESS vs ROHM comparison from Tharbamar

 

[Cecala]

AKM vs ESS vs ROHM comparison from Tharbamar

I saw this yesterday, I think Tharbamar will do follow up videos on this unit as new cards are made available.

 

[Ferdinando1968]

This is my OP-AMP mod for the XD05-PRO.

It's a home-made creation, so sorry for the imperfections.

I thought of it and created it in my spare time, and unfortunately I have very little free time.

I did it primarily to:

- testing the BURSON V6-VIVID, kindly provided free of
charge by @John Burson , whom I thank for his trust.

- to be able to test OP-AMPs that do not fit into the
housing in the future

- give an idea to anyone who has the desire and industrial
capacity to realize it.


Things to improve are:

- optimize the wiring, to standardize the lengths of the
signal paths and enlarge and filter the power supplies

- add a 'clean' external power source to allow you to
power OP-AMPs that exceed the capabilities of the
XD05-PRO

- the general mechanical setup.
For example, you could create a support that lifts the
DAC off the ground (like the one on IFI Diablo2),
so you don't have to keep it upside down
- etc


The MOD can be created with:

- an OP-AMP XDUOO board costing just a few EUR
(if you don't want to risk ruining yours).
This board was given to me by @shenzhenaudio ,
whom I thank.

- 2 DIP-8 sockets, like these
https://amzn.eu/d/h5aGrcx

- a kit similar to this
https://amzn.eu/d/6TNGFYT

- a kit of wires for wiring on CS, like this one
https://amzn.eu/d/2BNDAnP

Not having professional desoldering equipment at home, the idea was to solder strips of female pins onto the soldering already present on the OP-AMP board, but on the opposite side, and then to create the wiring necessary to bring the correct signals to the DIP-8 sockets present on the breadboard.

As rightly specified in a previous post by @quaddac,
this means having to invert all the signals taken from the sockets 'in reverse', i.e. inverting the signals of the left row of pins with those of the right.
This task is assigned to the wiring you see on the breadboard.

Coming to the VIVID, I find that they sound very good,
and that we are certainly premium OP-AMPs.

Compared to the SPARKOS, they have a slightly less warm and rounded sound, which you may or may not
like depending on your tastes.
(although I realize that non-optimized manual wiring is not ideal for appropriately evaluating delicate and sensitive circuitry such as OP-AMPs).

Below are some images:

Below is a dimensional comparison between the SPARKOS SS2590 and the SS3602 :

 

[xtreme4099]

This is my OP-AMP mod for the XD05-PRO.

It's a home-made creation, so sorry for the imperfections.

I thought of it and created it in my spare time, and unfortunately I have very little free time.

I did it primarily to:

- testing the BURSON V6-VIVID, kindly provided free of
charge by @John Burson , whom I thank for his trust.

- to be able to test OP-AMPs that do not fit into the
housing in the future

- give an idea to anyone who has the desire and industrial
capacity to realize it.


Things to improve are:

- optimize the wiring, to standardize the lengths of the
signal paths and enlarge and filter the power supplies

- add a 'clean' external power source to allow you to
power OP-AMPs that exceed the capabilities of the
XD05-PRO

- the general mechanical setup.
For example, you could create a support that lifts the
DAC off the ground (like the one on IFI Diablo2),
so you don't have to keep it upside down
- etc


The MOD can be created with:

- an OP-AMP XDUOO board costing just a few EUR
(if you don't want to risk ruining yours).
This board was given to me by @shenzhenaudio ,
whom I thank.

- 2 DIP-8 sockets, like these
https://amzn.eu/d/h5aGrcx

- a kit similar to this
https://amzn.eu/d/6TNGFYT

- a kit of wires for wiring on CS, like this one
https://amzn.eu/d/2BNDAnP

Not having professional desoldering equipment at home, the idea was to solder strips of female pins onto the soldering already present on the OP-AMP board, but on the opposite side, and then to create the wiring necessary to bring the correct signals to the DIP-8 sockets present on the breadboard.

As rightly specified in a previous post by @quaddac,
this means having to invert all the signals taken from the sockets 'in reverse', i.e. inverting the signals of the left row of pins with those of the right.
This task is assigned to the wiring you see on the breadboard.

Coming to the VIVID, I find that they sound very good,
and that we are certainly premium OP-AMPs.

Compared to the SPARKOS, they have a slightly less warm and rounded sound, which you may or may not
like depending on your tastes.
(although I realize that non-optimized manual wiring is not ideal for appropriately evaluating delicate and sensitive circuitry such as OP-AMPs).

Below are some images:




Below is a dimensional comparison between the SPARKOS SS2590 and the SS3602 :

How's the big sparkos sound compared to its Mini-me ?

 

[iron2k]

The Oracle II has arrived

 

[G1nt0]

 

[Ferdinando1968]

How's the big sparkos sound compared to its Mini-me ?

Unfortunately I haven't tried them yet...
but they probably won't work, because they require a more 'robust' power supply than what XDUOO can provide.

I will test them as soon as possible and let you know.

 

[marco1kw]

This is my OP-AMP mod for the XD05-PRO.

It's a home-made creation, so sorry for the imperfections.

I thought of it and created it in my spare time, and unfortunately I have very little free time.

I did it primarily to:

- testing the BURSON V6-VIVID, kindly provided free of
charge by @John Burson , whom I thank for his trust.

- to be able to test OP-AMPs that do not fit into the
housing in the future

- give an idea to anyone who has the desire and industrial
capacity to realize it.


Things to improve are:

- optimize the wiring, to standardize the lengths of the
signal paths and enlarge and filter the power supplies

- add a 'clean' external power source to allow you to
power OP-AMPs that exceed the capabilities of the
XD05-PRO

- the general mechanical setup.
For example, you could create a support that lifts the
DAC off the ground (like the one on IFI Diablo2),
so you don't have to keep it upside down
- etc


The MOD can be created with:

- an OP-AMP XDUOO board costing just a few EUR
(if you don't want to risk ruining yours).
This board was given to me by @shenzhenaudio ,
whom I thank.

- 2 DIP-8 sockets, like these
https://amzn.eu/d/h5aGrcx

- a kit similar to this
https://amzn.eu/d/6TNGFYT

- a kit of wires for wiring on CS, like this one
https://amzn.eu/d/2BNDAnP

Not having professional desoldering equipment at home, the idea was to solder strips of female pins onto the soldering already present on the OP-AMP board, but on the opposite side, and then to create the wiring necessary to bring the correct signals to the DIP-8 sockets present on the breadboard.

As rightly specified in a previous post by @quaddac,
this means having to invert all the signals taken from the sockets 'in reverse', i.e. inverting the signals of the left row of pins with those of the right.
This task is assigned to the wiring you see on the breadboard.

Coming to the VIVID, I find that they sound very good,
and that we are certainly premium OP-AMPs.

Compared to the SPARKOS, they have a slightly less warm and rounded sound, which you may or may not
like depending on your tastes.
(although I realize that non-optimized manual wiring is not ideal for appropriately evaluating delicate and sensitive circuitry such as OP-AMPs).

Below are some images:




Below is a dimensional comparison between the SPARKOS SS2590 and the SS3602 :

excellent work

 

[Cecala]

The Oracle II has arrived

Install please and tell us the difference.