Real example of coloured blobs everywhere!: https://www.behringer.com/product.html?modelCode=0808-AAH Meanwhile, "silver" buttons with "lit up" status around the buttons https://www.behringer.com/product.html?modelCode=0843-AAB is like the buttons we see on the Quartet Scaler.

DAVE's original remote is a travesty. Apparently current preamps come with something similarly obnoxious. If I was you I would contact a shop that sells Chord stuff and buy the replacement DAVE remote. It's still a toy worthy of a £100 hi-fi, but the buttons are pretty clear on the subject of...

Ideally Ultima DAC is a single chassis that could fully integrate Quartet scaling and DAC. An Ultima 5 power amp is about 5 times the internal volume of DAVE (Ultima Pre 2 is a bit smaller). So within a chassis of the same size, there's plenty of space including having shielding, for high...

Curious, why do you interact with HMS? What do you have to do regularly (or what would family members have to do)?

Music production studios don't solely have analogue sources.

We're well past the point where that matters to anyone who could be interested, in my opinion. It was early last year that John Franks leaked Quartet, I believe. So around 2 years later it is currently expected to release. An additional 6 months or a year seems neither here nor there. And USB...

USB could be an option. Considering that Davina is going to have to have a USB output, it seems weird to me that Quartet Scaler does not have the ability to output over USB.

QMS + Mojo 2 or HMS + DAVE? :ksc75smile:

Well, arguably, it wasn't ...

This is entertaining

I think it's a little embarrassing that Chord has 12V trigger capability but the DACs don't support that. On the other hand, it would probably cause RF noise problems. I think Naim has created an optical system for trigger automation with its newest range. Optical would be preferable on Chord...

I think we have to assume it does. A friend with a Mojo 2 reports sound quality differences amongst three cables: KabelDirekt, Sys Concept and Supra ZAC (in ascending "sound quality"). It may be that Mojo 2 is more susceptible than other Chord DACs (or HMS). The well known streaming services...

Another test you might like to try: Each of the pair of outputs on the back of HMS dedicated to DBNC mode is capable of outputting music on its own, with no cable connected to the other. So try this test: turn off HMS and TT2 (and the amplifier you have connected to TT2, if you use such an...

I wonder, is the development of QMS benefitting from the Ultima DAC prototype?

I'm guessing @Rob Watts didn't do a presentation at Singapore CanJam about his research findings in the development of Quartet M Scaler as there's been no mention that I can find... Oh well, maybe Munich is when we'll find out.

Maybe not directly relevant to your implementation, but I found these interesting and fun: The critical concept explored in the video is that the self-inductance of a capacitor is relevant to switching noise, so a physically smaller capacitor will have less inductance, and so works better to...

It's occurred to me that this might also explain why some people report clicks or other loud noises when music changes sample rate. I think @Rob Watts reported an inability to reproduce this problem, so perhaps it's worth trying again with automatic input selection (and, obviously, with no...

The old school approach is to cover the USB cable in ferrites, for what its worth. But these little devices that convert USB into optical are generally very compelling. Surely, someone has compared the sound quality of these little things. Surely...

This is an extremely good point. Since Mojo 2 uses the EQ mechanism to effect volume control, it seems reasonable that Quarter M Scaler would implement volume control in the same manner. Honestly, though, I doubt Rob will implement any form of communication "over the wire" for either EQ or...

I think many here would find lots of value in this discussion: https://parttimeaudiophile.com/2024/03/19/an-interview-with-peter-qvortrup-of-audio-note-uk/ The direct link to the audio is here: You don't need any kind of Apple stuff or account to listen. I find it particularly interesting...

Thanks, so it seems like in Hugo M Scaler the decimation filter for 176.4KHz is less capable and there is no dedicated noise shaping for 4FS. I remember you saying how much work you've put into decimation for Davina and it seems like that work was all after HMS was launched. I suppose the...

@Rob Watts With Hugo M Scaler, when fed 44.1KHz sample rate music, the output over TOSLINK is 176.4KHz and uses approximately 250,000 taps. When this output is being used, the dual-BNC output is still active, so dual-BNC gets 705.6KHz with ~1M taps. So how does the TOSLINK output get generated...

@Rob Watts does Quarter Scaler have a TOSLINK output?

Advertised for CanJam, I have no idea whether there are slides or a video...

Apparently lots of analogue talk by Rob at the recent New York CanJam: Digital Isn’t 3:00p to 4:00p Digital is digital, it's all ones and zeroes. Except that, no it isn't. Beyond the fundamentals of the digital-to-analogue conversion process, there are a host of additional factors that can...