Dont worry about all the technical talk, I'm aware your only interest is the "best performance" DAC for audio.
For the premium Sound quality version I recommend the L2 (or L3 if you require ADC inputs) with the Fusion resistors option. Once we completed the development I can advise on the total PCB cost with the Fusion option.
The Extra "Fusion" resistors are sold at cost - we don't make extra on the premium versions.
I remain totally baffled by all the technical talk about different versions, resistors, slaves etc. All I know is that I want to upgrade my current MDAC to provide the best sound possible for the "right" price. So, for us simple folks (and I am presuming there are others out there!) could you please go back to basics for a mo?
1) Will you require my old unit back or will you be sending out a DIY install PCB?
If you feel competent you can swap the PCB yourself - we will post a Youtube video with step by step instructions + provide a Torx Screw driver with the PCB to aid disassembly of your unit.
If you fell uncomfortable with performing a home "DIY" upgrade, then you can send your MDAC to us in Czech Rep. (at no extra cost asides from the increased shipping cost).
2) Do I need to confirm the requirement for an L2
Once I've completed the next stage of the project I'm just in the final process of completing (issuing the Analogue PCB files for Prototype production) then we will Email everyone on the MDAC2 list and request those who have decided upon the L2/L3 version for the next development payment (the final payment for L2 version).
3) Will there be anything more to pay (not even sure if I am fully paid up!)
For those who have decided on the L1 option then there are no more development payments due - only the funds for the "PCB at cost".
For L2 / L3 options then we will request these payments when we meet our design targets, an extra GBP100 development payment for L2 (and finally an extra for GBP100 for L3).
4) What happens next
Will I hear from you when shipping is starting?
Once the development is completed and we progress to production then we will request the funds for "PCB At Cost" - this is used to fund the production of the PCB's and shipping etc. We don't make profit on the PCB - they are sold at cost.