2. digital
  3. 125560-20253

MQA - One Filter to Rule them All?

Hi Everyone,

Just thought I'd start another flame....er, discussion. I've been reading some about MQA.  It has several components, but I want to focus on one in particular. The digital filter compensation.

The other two parts are compression and authentication.

We don't have a lot of DAC's to listen to with MQA right now, but here's my understanding.

By measuring time or amplitude errors in ADC's AND DAC's MQA seeks to correct the behavior, making the entire A/D --> D/A chain closer to ideal. It's pretty ambitious. What I'm wondering is, assuming this is real and not snake oil, does this mean all MQA DAC's will begin to sound alike? Will otherwise mediocre DAC's step up, and great DAC's not have that much to contribute anymore?

If so, maybe this will usher in another great era of tone controls being built into our preamps or DAC's instead of having to make tonal changes via cables and tweaks.

What say you? Assuming MQA is not snake oil, (could be, haven't heard it) doesn't it mean all DAC's will sound the same?

Best,


Erik
erik_squires
cvalle
6 posts
 

Given the amount of time that's passed, it's interesting that so few hardware partners seem to have come out with MQA compliant equipment. If you do a search here on Audiogon for "MQA", you get the same 3-6 listings (from the same seller) for the Mytek Brooklyn.

Besides that, there's the Meridian Explorer and a couple of portable players plus the Mytek Manhattan II. Anything else?

CV

erik_squires OP
16,346 posts
 
@cvalle as far as I know you are mostly correct, however, I have a personal connection ( cough cough cough, bs) with Berkeley Audio Design and they have stated they hope to release MQA compatability this year (not bs).

If Tidal support is real, AND the benefits are real, it will be like selling a good pie. You don’t have to sell it, the wafting smell will sell itself. Otherwise, it will be like Windows 10, which requires Microsoft to take over your computer, possibly illegally, and push an update you didn’t want.

You are right, of course, all of the current models of the Mytek DAC’s have MQA support, including the Brooklyn which I’m listening to right now. The older, Stereo 192 DSD does not, but it’s also insanely cheap via the website right now, $1,000 as a discontinued product.

Best,


Erik

bombaywalla's avatar
bombaywalla
1,958 posts
 
You are right, of course, all of the current models of the Mytek DAC’s have MQA support,
interesting. So, Mytek did submit their designs to Meridian & get their seal of approval for MQA. Do you know if Mytek is paying royalty fees to Meridian for this? It'll probably show up in it's price...

i'm sure that you'll get a MQA-supported Berkeley DAC when it releases. It will interesting for you to update us w.r.t. its sound vs. the Mytek Brooklyn sound & let us know if these 2 DACs sound identical (as you had suggested in your above posts).... 

erik_squires OP
16,346 posts
 
Hi @bombaywalla

Haha, I don’t have that kind of cash flow, and I’m not the biggest BAD fanboy. I like them a lot, but overall I think I prefer warmer sound.

According to what I read online, yes, Mytek did in fact submit the DAC’s for approval, or measurement or whatever. I’m not sure how it works, or what exactly they must measure. It sounds like a pain in the butt honestly. I doubt every applicant has the same or appropriate measurement devices, so this must mean that Mytek has to submit the DAC somehow, get Meridian to measure it, and provide refreshed code or coefficients, have those implemented, and re-measure. What a mess.

As I understand it, they measure the behavior of the entire DAC, not just the chip. It would be really convenient if it was just per chip so there’s just one set of adjustments for a BB 20459 (or whatever). This is one reason why I read Schiit is not on the bandwagon (among others). Perhaps in the future as they get more experience this is how things will go, so it will make it a lot easier for small-volume makers to get pre-approved decoding.

It may even be possible MQA decoding will be build into streamers, so you can configure your steamer and say "My DAC uses an AKxxxx chip" and voila. Then you could be all Schiit happy and have MQA. On the other hand, once the type of benefit is known (if any), maybe an open-source DAC adapter will be written which can provide at least the proper de-coding adjustment.  That is, if Meridian is measuring something like a pre-ringing filter, adjusting for that in the stream could be done by others without stealing their code, just the idea.

After the Alpha with MQA comes out maybe i’ll find a fellow San Francisco Bay audiophile to bring it and compare though. Right now I am just hoping for construction to finish so I can finish breaking in the Brooklyn. :)

Best,


Erik
Post removed 
More to discover