D200 Mod 2.0.1

[yabaVR]

Hi ogs,
yes  ground is common for both channels. It was the same for every amp I opened in the past and the D doesn't differ.

The layout of the Pro's is the same for the speaker terminals as I can see. You can have a look at Antoine's System post.There's a picture of his 250 Pro opened. I did not have opened a Pro myself yet and I would meassure first before soldering.

The new mod is still burning in (about 48h now) but very promising as I can hear this big of an improvement just yet.

gui

Can I ask what the 2x10 pin connector is used for? I assume the D-board is using this, but do you know what signals it carries?

As the internal construction is using many 'pin' connections, is this the reason why we see so many different burn in descriptions? If the metal quality or contact area (quality) varies from unit to unit this could affect burn in and sound. Do you think a contact enhancer fluid of some kind would work here?

The 2x10 pin connector is 2x4 (+ signal left), 2x4 (+ signal right) and 2x2 (signal ground). It's the 'downpipe' from the D-amp above.
As a Devialet kind of 'mixes' the voltage of Class A and current of Class D this pin connector is the place they both get married   (or near by on the motherboard). If you meassure the signal paths they (Class A - Class D) are both paralleled at this site.

The design of pin connecting the boards is clever if viewed from production side. No special qualification is needed to put a D together. Shown once or twice and everybody in this forum can plug the boards together, fasten some screws and that's it. Very fast and cheap. Maybe 10min needed if you made it past the 20th sample and you get routine.
Also there will be less connection faults with the pin stripes as when soldered with single cables. You need more skills to solder board to board and the chance something goes wrong is quiet bigger.

There are special fluids on the market to enhance the contact area of such pin connectors. Not the standard but some more expensive 'better sounding' fluids. I'm sure some of the others can come around with a link.

gui