Update on the Streamer / DevDAC progress.
https://www.dropbox.com/s/izgj6t62et9rqn4/A01 Streamer and DevDAC.JPG?dl=0
Above is the orignal (and now very hacked) Version A01 MDAC2 Streamer PCB and DevDAC A01 PCB.
Good and bad news - good news is that the DevDAC works well, with dynamic range of around 125.5dB and THD (compensated) of 0.0002%.
The DevDAC as original designed as a "simple" development DAC, for PFM we have made a few performance enhancements to the pending A02 board primary related to the clock circuit which will be an advance discrete design and added a 3rd clock frequency for non asynchronous (ASRC) mode operation (for SPDIF inputs).
We will also use higher quality RCA output connectors (the same type as used on the MDAC audio outputs).
Bad news is that during testing the DevDAC we found an interface timing issue with the streamer PCB. We could "bodge fix" the issue, but I felt is was better to re-spin the streamer PCB to version A04.
The painful part is that I'll have to scrap GBP600 worth of bare PCB's that I'd ordered and waiting here to be built, and also the solder paste stencil - but its for the better so that all streamer boards are built to the same spec. and "perfect"
We have already updated the streamer PCB design to A04.
So we will ship A04 streamer PCB's and A02 DevDAC PCB's to those interested in being part of the streamer Beta testing.
I hope DevDAC owners will be happy with the audio performance, with the Clock updates its a very decent design....
Its a decent step-up to the design used on the Pro-Ject DAC, with significantly improved PSU, clock design & true balanced output.
There will be a front panel option offered for the DevDAC - otherwise its controllable via the streamer App.