dCS (James) actually said that theres no sound quality impact from that recent firmware update. Those who claim to hear differences are imagining things.

You won't need to; Mapper 2 is the original mapping algorithm, while Mapper 1 and 3 are the new algorithms. So, it's very easy to do A/B comparison by just selecting the appropriate mappers during playback. The differences is very clear, at least on the Vivaldi and Rossini currently, and I...

I have to say the Chord Poly is one of the most frustrating products around...the Manual appears woefully out of date, things don't behave as documented, nor does there appear to be any consistency in behaviour comparing the various posts here. Out of nowhere my Poly decides to shutoff it's...

The Dual-BNC link is in fact standards based, on the Dual-AES specification extension to AES, with AES-3id (75 Ohm BNC). Chord's Dual-AES implementation interworks perfectly with dCS :)

Try the Corning USB Optical cable. It works very well. Doesn't provide completely galvanic isolation, but DAVE's USB's pretty good anyway. https://www.amazon.com/Optical-Cables-Corning-Cable-Meter/dp/B00JOJRF6K/ref=sr_1_1?ie=UTF8&qid=1499482703&sr=8-1&keywords=corning+usb+optical

Hopefully we'll get to hear some test conversion tracks with Davina sometime? :slight_smile:

Thanks Rob! Good to know :beerchug:... (You'll have to get your Documentation folks to include this info in the manual or at least on the website)

There's no mention of DSD (or DoP) support in Blu2's feature/spec list or User manual, just the PCM rates... Looks like Blu2 doesn't support DSD (currently?) and you'd need to either transcode DSD to PCM before it hits Blu2, or have a separate USB connection to DAVE for DSD streams.

Yes they do, a "Manufacturer's Comments" section. In some instances, they even have a "Follow-Up" review. That said, in the case of the DAVE review, I didn't think the issue was serious enough to warrant either. In fact, the high-frequency interference in the low-level undithered signal...

Thanks for the clarification Rob, I realised that after taking a 2nd look at the numbers! :beerchug:

Thanks for the link! :beerchug: I also found Rob’s absolutely brilliant Blu mk 2 technology presentation post #172 as well, that says the XC7A200T consumes “enormous peak 10A current”. Re-looking at the Xilinx data sheet and summing the "absolute maximum current" draws of the FPGA logic...

That would imply only slightly over 0.16Amps of current draw in a 230V AC setup (assuming a power factor of 0.8). No way the FPGA could be drawing "10Amps" of current, unless there’s a whole bank of them. Clearly there’re some typos going on that published specs on that Blu Mk 2 web page...

Does it really though? The Xilinx Artix XC7A200T FPGA draws less than 400mA of current at peak with a 1.8V supply … Are there more than one of those chips in Blu Mk2? Or is it a typo in their published specs? http://www.chordelectronics.co.uk/product/blu-mk-2/#techspec

Makes sense. Sort of an ultimate disaggregation of the Hugo architecture; with DAVE(+BluMk2) performing the WTA interpolation filtering, with digital DX interfaces out into the Pulse Array Amp which does the actual D-to-A conversion (based on the Pulse Array DAC architecture). @Rob Watts I'm...