CHORD ELECTRONICS DAVE

[Rob Watts]

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

You have quoted the quiescent or the leakage current of the FPGA - that is it is just powered up, with no clocks running at all! Normally leakage current is a few uA, and here it is 0.4 A!

I have put a low power mode into Blu 2 - so when there is digital silence, the DSP cores are switched off. In this mode, the FPGA still consumes 2A, and in usual operation it measures out at 10A - 528 DSP cores running is a lot of power even for an incredibly efficient FPGA.

Rob

 

[AndrewC88]

You have quoted the quiescent or the leakage current of the FPGA - that is it is just powered up, with no clocks running at all! Normally leakage current is a few uA, and here it is 0.4 A!
...
Rob

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

 

[tunes]

Linn Klimax DS Digital Streamer costs about $23,000 and the DAC incorporated also up samples the digital data for better sound. How does this differ from what is done in the Dave and is it that much better? Can the DAVE serve as a DAC for streaming from TIDAL??

 

[shuttlepod]

That's not hard to believe. But how about Crossfeed 1 specifically?

Hi JaZZ--

Yes, I can hear some degradation of the sound with Crossfeed set at 1 (when using speakers), though not as much as 2 or 3. When testing channel separation with the Stereophile test CD, it is actually surprising how much sound is produced in the channel that is not supposed to have any sound when Crossfeed is set at 1. It is not something you have to strain to hear.

 

[ecwl]

I think the Hugo manual was pretty clear on the crossfeed
Crossfeed 1 - 9dB 700Hz
Crossfeed 2 - 6dB 700Hz
Crossfeed 3 - 4.5dB 700Hz

I don't fully understand what that means. But I think when I google Bauer crossfeed, the first thing that comes up seems to explain what a similar crossfeed would do. But then I don't fully understand that article either.

 

[hieukm]

Here is 2 clips of Dave vs Dave + Blue. Enjoy.

 

[tunes]

What is the CD that is being played??
What are the speakers?
What amp?

 

[theveterans]

^ The microphone and video camera that they use are terrible. Room acoustics are all over the place too where the mic is positioned.

 

[miketlse]

^ The microphone and video camera that they use are terrible. Room acoustics are all over the place too where the mic is positioned.

Also the audio can only be as good as the dac that people use when they watch the video, so you will never hear the same sound quality as the people in the room listening to the DAVE + Blu (2?).

 

[Sonic77]

With the Blu MkII the bass seemed to go lower.

 

[hieukm]

Anyone who cant hear that the M-Scaler gave at least 2 notch up on resolution needs to have their ears checked. We are not looking at absolute performance hence discussing room acoustic speaker system is pointless. It is the same phone recording 2 version: one wtih M-Scaler and one without. Listen for incremental differences and you will see how amazing M-Scaler is.

Btw, listen through your phone speaker will be easier to detect the difference than listen through headphone.

 

[Light - Man]

What is the CD that is being played??
What are the speakers?
What amp?

Salena Jones - You Don't Bring Me Flowers

 

[rkt31]

wow, I had some audiophile voices CD which had a salena Jones song. with the first song itself I knew that she has one of the cleanest and powerful voice the other one I liked of Eva Cassidy's . great song selection indeed for Dave +Blu 2

 

[rkt31]

the difference is of expression . with m scaler the voice has more expression .

 

[adyc]

Yes. I need to have my ears checked. I cannot consistently hear difference between the two clips. These two clips are both very enjoyable and emotional. Isn't better to showcase the difference using orchestral music given the claim that Bu2 improves on Dave alone over depth?

I don't understand how one can make the claim that Blu2 has more resolutions using these 2 clips. The music is simple acoustic and not a lot of instruments are simultaneously playing.