Audio Science Review of Expert 200.

[petrik]

Amir has reached out to Devialet for a response.
There are questions that could easily be cleared up but I wonder if they will be as woefully uncommunicative on this as they are with pretty much everything else….

Since the device is not under warranty, does Devialet really need to respond? How many other manufacturers would respond to similar requests?

Someone on ASC posted the following links for 170 measurement. It's the same hardware. Registration is required to read these report.
This seems to be pretty comprehensive tests, but done only at 1khz.
http://www.milleraudioresearch.com/downl...t_170.html
http://www.milleraudioresearch.com/downl..._lpcm.html
http://www.milleraudioresearch.com/downl...0_usb.html

On the other hand, its about time for Devialet to explain if their units are tested for full power using multiple sign waves. Many people do refer to Stereophile's measurement of original D-premier. I thought that would have been taken care of in last 8 years.

These are good links from @sam1000

For anyone interested, the registration that is required to view the measurements is free, click the "registration" button per the link below:

http://www.milleraudioresearch.com/avtech/index.html

(note the comment: Javascript must be enabled in your Browser to activate the Registration button.

Measurements for the D-Premier can also be found there:  (Nearly 10 years old now.....)

http://www.milleraudioresearch.com/downl...nput).html

http://www.milleraudioresearch.com/downl...nput).html

I know Paul also tested the O'dA, I would have been interested to see these but unfortunately the website only seams to show measurements up to 2014, the Od'A review was March 2016:

http://designwsound.com/dwsblog/2016/03/...hare=email

Mindful of the recent posts here, I am sure we can all agree that Paul Miller has a touch more expertise with audio measurements than I do.  When hunting for other things I found this, it looks like Paul uses Devialet amplification in his own listening room.  (Devialet for 2 channel, Krell for 7 channel AV)  So whatever he has found in the measurements, it seems Devialet is good enough for him.

https://www.hifinews.com/content/paul-miller

Thank you for sharing the links. There seems to be some significant differences between the Expert 170 and the D-Premier measurements, but I don't know are the results comparable. Any ideas what do those "FAIL" parts mean? There are lots of those in the Expert 170 measurements, but only one in D-Premier.

I'm just thinking what might explain the differences. Do these devices really just perform differently, or could for example differences in settings / configuration explain at least part of the results? I'm not sure did the D-Premier have features like SAM, DPM, or ICM which the Expert 170 did have.

[PeppaPig]

I really don’t like this guy and I question his intention!

He is reviewing a few years old discontinued product at this moment where the Pro is easily to get now. Why?

And if his intention has problem how can I trust his review.

Like put a review online today for a BMW 320i that made in 2016???

I think he is on purposely put down Devialet.

[Jean-Marie]

I really don’t like this guy and I question his intention!

He is reviewing a few years old discontinued product at this moment where the Pro is easily to get now. Why?

And if his intention has problem how can I trust his review.

Like put a review online today for a BMW 320i that made in 2016???

I think he is on purposely put down Devialet.

I'm not so much interested into what he found nor not.

I am more interested into understanding what members of this forum have been experiencing and measuring.

Jean-Marie

[mdconnelly]

I really don’t like this guy and I question his intention!

He is reviewing a few years old discontinued product at this moment where the Pro is easily to get now. Why?

And if his intention has problem how can I trust his review.

Like put a review online today for a BMW 320i that made in 2016???

I think he is on purposely put down Devialet.

I'm not so much interested into what he found nor not.

I am more interested into understanding what members of this forum have been experiencing and measuring.

Jean-Marie

I won't pretend to have the necessary equipment nor expertise to perform such tests.   But I do have a healthy pair of ears which is what led to me buy my first D200 4+ years ago, replace with a 220 Pro and then add a 2nd for a 440.   To my years, the sound quality blew away the fairly expensive separate components I had been using up to that point.   Now, perhaps I have faulty ears as well (or perhaps I just don't have the necessary expertise to use them correctly ;-).  But I do know that my 440 Pro keeps me smiling late at night.

As to Amir's motivation to test the D200 that he was loaned.... haven't a clue.   But it certainly did stir up a hornet's nest.   Hmmm....

[Jean-Marie]

I really don’t like this guy and I question his intention!

He is reviewing a few years old discontinued product at this moment where the Pro is easily to get now. Why?

And if his intention has problem how can I trust his review.

Like put a review online today for a BMW 320i that made in 2016???

I think he is on purposely put down Devialet.

I'm not so much interested into what he found nor not.

I am more interested into understanding what members of this forum have been experiencing and measuring.

Jean-Marie

I won't pretend to have the necessary equipment nor expertise to perform such tests.   But I do have a healthy pair of ears which is what led to me buy my first D200 4+ years ago, replace with a 220 Pro and then add a 2nd for a 440.   To my years, the sound quality blew away the fairly expensive separate components I had been using up to that point.   Now, perhaps I have faulty ears as well (or perhaps I just don't have the necessary expertise to use them correctly ;-).  But I do know that my 440 Pro keeps me smiling late at night.

As to Amir's motivation to test the D200 that he was loaned.... haven't a clue.   But it certainly did stir up a hornet's nest.   Hmmm....

If your ears are flawed, so are mine, because I agree with your perception of the Devialet amplifiers to be superior and more accurate than any other I have been able to listen to. 

Jean-Marie

[Pim]

I'm not so much interested into what he found nor not.

I am more interested into understanding what members of this forum have been experiencing and measuring.

Jean-Marie

Experience: Great sound
Measure: The distance between my speakers and my ears. There's no substitute for a good setup.

[David A]

Experiencing: a damn good time when I'm listening.

Measuring: I don't know how to measure pleasure apart from, perhaps, time spent listening and that's on the up but currently that's an unreliable measure given that the coronavirus lockdown is a confounding factor resulting in more time at home which means more time listening.

I assembled my system in order to listen to music and how it sounds and how much I enjoy it counts a lot more to me than how it measures. It sounds great to me, it sounds better than any system I've had in the past, and I'm enjoying listening to music on it more than I've enjoyed listening to any earlier incarnations of my system. Is this going to be the last incarnation of my system? Probably not, but it's highly unlikely that the next change I would make would be replacing my Devialet. I don't think the Devialet is the limiting factor in my system.

[PeppaPig]

I have a 1000 Pro connected to an MBL low ohm speaker, which known hard to drive speaker brand in the world.

I had never ever had issue with the Devialet. I don’t know what that high frequency issue he is described, the treble sounds extremely good in my system, I don’t hear any kind of lack of energy from HF part, instead sometimes I feel it has too much energy in HF, I sometimes drop the treble to -1db in Devialet setting.

I also play the MBL in extremely loud volume like to 5db+ and it never shut down itself ever.

But I indeed hear that precious Expert generation has problem with driving low ohm speakers. Devialet has improved it in the Pro series and PSU is a major upgrade in Pro.

We should email that test to Devialet and see how they response to it.

[whatmore]

If we are talking about what ears tell us, I put my 120 up for sale the moment I listened to it because it sounded broken.
On someone's suggestion, I turned off DPM and things dramatically improved.

The ASR review has DPM turned on

[maxijazz]

The ASR review has DPM turned on

That is quite possible.

I can't remember where, but i have twice read about Devialet's poor measurements in past, due to SAM being on as found later on. And the measurements were done by well-known reviewers. I've ignored any measurements presented in "audio media" since then.