How are things coming along? It's been almost three weeks since you posted your last message about V3. It sounded hopeful then, did that change in the meantime?
No worries Gogu. We are not exactly the fastest people on earth 
Grufti, we (again) changed some details on the design and (again) I haven't even received my beta PCB's yet.
We changed decoupling and situation around the charge pump. If you need a DAC fast then skip this project. We are into ridiculous details which take time.
Grufti, we (again) changed some details on the design and (again) I haven't even received my beta PCB's yet.
We changed decoupling and situation around the charge pump. If you need a DAC fast then skip this project. We are into ridiculous details which take time.
No worries, Jean-Paul, I'm not in a hurry at all. I have built three of the V2.6 DAC's. It's just nice to find out what you are up to from time to time. Ridiculous details are fine by me. The designers Charles and Ray Eames are credited with a quote that reflects their design philosophy pretty well. It is how I approach "serious" projects myself also. I'm attaching it as an image here.
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I'll take a shot at answering this: 1. unlikely. The choice was either bal or unbal in V2.6. The state of affairs for the upcoming V3 - the version that you are signing up for in the group buy - is not settled for the balanced version. The unbalanced version of V3 will be released first. The balanced [bridged] version of V3 will be released later.
It isn't terribly difficult to convert a balanced signal to unbal.
2. there are lots of USB to S/PDIF converters available.
Hi All
jay53, I confirm grufti answer :
1° - V3 will be available in SE version, followed with a BAL one using 2 boards (different stuffing for each board like V2.6).
Each board will generate BAL signals : (+) for board 1 & (-) for board 2.
BTW you can't have SE and BAL signals at the same time.
Another way is the use of Sync->Async (BAL->SE) converters such as Lundhal with a BAL version, and disconnect it while using BAL signals...
2° - USB -> SPDIF is the other alternative to USB -> I2S.
V3 provides embeded WM8804 SPDIF receiver & I2S connexions (U.FL pads)
I've received my V3 Beta Kit.
Soldering job is done, tested and working perfectly with USB -> I2S
I haven't used U.FL connectors, BTW I first encountered some signals troubles due to cable lenght.
Solved with shorter cables (10cm <).
More to come
Phil
jay53, I confirm grufti answer :
1° - V3 will be available in SE version, followed with a BAL one using 2 boards (different stuffing for each board like V2.6).
Each board will generate BAL signals : (+) for board 1 & (-) for board 2.
BTW you can't have SE and BAL signals at the same time.
Another way is the use of Sync->Async (BAL->SE) converters such as Lundhal with a BAL version, and disconnect it while using BAL signals...
2° - USB -> SPDIF is the other alternative to USB -> I2S.
V3 provides embeded WM8804 SPDIF receiver & I2S connexions (U.FL pads)
I've received my V3 Beta Kit.
Soldering job is done, tested and working perfectly with USB -> I2S
I haven't used U.FL connectors, BTW I first encountered some signals troubles due to cable lenght.
Solved with shorter cables (10cm <).
More to come
Phil
Phil,
Since you will be releasing the single ended version before the balanced there is 2 entries in the spreadsheet for me one for single ended DAC and power supply boards and parts, and one entry for the same balanced when that is completed. As if you needed any more confusion on this but I got lucky and there was a blank spot on the spreadsheet next to my original order so it is not too confusing.
thanks
Bill
Since you will be releasing the single ended version before the balanced there is 2 entries in the spreadsheet for me one for single ended DAC and power supply boards and parts, and one entry for the same balanced when that is completed. As if you needed any more confusion on this but I got lucky and there was a blank spot on the spreadsheet next to my original order so it is not too confusing.
thanks
Bill
The way I interpret it for Balanced you use one of the single end board and the second board you use for balanced you don't fully populate. I just decided I wanted a single ended and a balanced DAC. Though the balanced configuration has not been finalized yet. Part of it is driven by my lack of patience and wanted to not wait until the balanced variant is out to start building.
Bill
Bill
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Hi All
jay53, I confirm grufti answer :
1° - V3 will be available in SE version, followed with a BAL one using 2 boards (different stuffing for each board like V2.6).
Each board will generate BAL signals : (+) for board 1 & (-) for board 2.
BTW you can't have SE and BAL signals at the same time.
Another way is the use of Sync->Async (BAL->SE) converters such as Lundhal with a BAL version, and disconnect it while using BAL signals...
2° - USB -> SPDIF is the other alternative to USB -> I2S.
V3 provides embeded WM8804 SPDIF receiver & I2S connexions (U.FL pads)
I've received my V3 Beta Kit.
Soldering job is done, tested and working perfectly with USB -> I2S
I haven't used U.FL connectors, BTW I first encountered some signals troubles due to cable lenght.
Solved with shorter cables (10cm <).
More to come
Phil
I'll take a shot at answering this: 1. unlikely. The choice was either bal or unbal in V2.6. The state of affairs for the upcoming V3 - the version that you are signing up for in the group buy - is not settled for the balanced version. The unbalanced version of V3 will be released first. The balanced [bridged] version of V3 will be released later.
It isn't terribly difficult to convert a balanced signal to unbal.
2. there are lots of USB to S/PDIF converters available
Thanks Grufti and Korben.
I have signed up for 1 SE Kit with Parts
Jay
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