My D1 went down the other day, throwing a nasty smell through the appartment in the middle of night. Sent back to Vincent Brient last weekend and it's already there under repair.
Now, I took the opportunity to ask about the D1-six upgrade which ended up being a big big mistake... I went for it and my audio budget is once again pretty much shot for the rest of the year :-O.
My D1-dual was 2 dacs per channel working in differential mode (hence one was using only half the dacs with rca or headphone out).
The D1-six adds one more DAC per channel and they are switched to parallel operation. The conversion to differential signal is done by a separate discrete circuit (no opamp) and the output stage was improved compared to the dual.
Apparently, putting 3 dacs in parallel brings much more benefit than running a single dac in differential configuration... We'll see
As a bonus, I am actually getting a brand new unit, expecting it back here in not too long. I put back the Yamamoto YDA-01 to duty during the absence of the D1 and, while it's not bad, the magic is gone. It's not a huge difference but it's missing air, instrument separation, impact. I will be putting the Yamamoto dac for sale, I've been too lazy to put up the add till now but it is time to let it go

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Cheers,
Arnaud
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