Buckeye Purifi Eigentakt 1ET9040BA monoblock power amplifier Stereophile Measurements

[AudioJester]

@Buckeye Amps - big fan of your work, following your business development has been like following a first round draft become a superstar!

One question - why send a pre-production module that is not for public sale, in your unit for review?

 

[Old_School_Brad]

"The Buckeye high IMD problem." That seemingly points to Buckeye Amps as a issue and not Purifi.

I believe it should've have been clarified further to prevent the misunderstanding that it implies Buckeye Amplifiers has issues. I read it like that as well.

 

[Buckeye Amps]

@Buckeye Amps - big fan of your work, following your business development has been like following a first round draft become a superstar!

One question - why send a pre-production module that is not for public sale, in your unit for review?

We didn't/it wasn't a pre-production module.

I think people are erroneously assuming that what Purifi is calling the pilot production batch from June (which had the defect) is also the pre-production batch.

Our (2) pre-production modules arrived to us in very early Spring. And are still in our hands (never used in builds).

 

[AudioJester]

We didn't/it wasn't a pre-production module.

I think people are erroneously assuming that what Purifi is calling the pilot production batch from June (which had the defect) is also the pre-production batch.

Our (2) pre-production modules arrived to us in very early Spring. And are still in our hands (never used in builds).

Thanks for clarifying. So the faulty modules also affected commercial sales modules?

Edit: well at least one!

 

[pogo]

And again...

That's exactly what I meant in the other thread. You can only process this properly with an 8D report. What is currently happening here on ASR is not expedient and can result in many losers!

Copied from the other thread:

Purifi is the origin of the problem

I think this statement is premature and whether it covers all observations, who knows. Normally in the industry, the suspect component is returned to the manufacturer for an investigation and an 8D report is requested. Why not here too? This would clean up everything and such a case should not occur again in the future. That would be a win-win for everyone involved.
Btw. from my point of view, the topic of ribbon cable close to loudspeaker cable was also not sufficiently considered/investigated.
This is why a properly conducted RC analysis is all the more important.

 

[Sokel]

I think there's some cultural or habit problems here.
What was the norm for decades was to open an amp and see this QC sticker with the little boxes checked and signed.And I'm talking cheap ones too,in the $1k-$2k range.
And the smaller the company,the more they bragged about this kind of personal attention,etc,you know the works.

Finding out that this is not the norm these days and only few samples are tested at a sampling fashion may come as a shock,specially to older folks.
On top of that at this age and time we expect high quality testing with gear like AP,etc (I don't know what the "etc" is but ok) and reporting about from highly skilled operators.

Well,the above comes with a price,as thermals,looks,etc,everything else in life.
Yes,even me,the most superficial user in here must admit that.And it's a good thing sometimes.
If a design is cost-oriented as its main quality every corner (apart from safety ones) can be cut.And folks should expect that.

 

[Holmz]

Remember March speakers and the binding posts? That was a MA issue rather than a supplied component. No boutique manufacturer will be completely immune to these kinds of issues - its how they deal with them when identified.

True.
And Buckeye and Purifi are doing that here.

By the way, do you have some sort of connection with March? You seem to be forever defending him across this forum

I have met the fellow and he lives close by, and I tried to get some speakers, but that sort of went sideways.

My defence in mostly in the Quixotic sense when it seems like a dog pile is happening.
But I’ve also been vocal in defence of Erin.

Is it wrong to offer differing views and perspectives ?
Or do you want me to stop? (Or is it just an astute observation.)

 

[mocenigo]

Clearly Holmz has a chip on his shoulder if he's going to pass blame of a Purifi issue on to BA.

I think the important question is: does the chip on Holmz’ shoulder have a serial number?

 

[Sokel]

True.
And Buckeye and Purifi are doing that here.


I have met the fellow and he lives close by, and I tried to get some speakers, but that sort of went sideways.

My defence in mostly in the Quixotic sense when it seems like a dog pile is happening.
But I’ve also been vocal in defence of Erin.

Is it wrong to offer differing views and perspectives ?
Or do you want me to stop? (Or is it just an astute observation.)

The whole rant starts from when he putted the $70 Khadas Tone Board in a nice box and was selling it for $2k (I think) corrected,more like $400-500.
That,will never heal.

 

[Holmz]

…
Clearly Holmz has a chip on his shoulder if he's going to pass blame of a Purifi issue on to BA.

Whatever dude…
Maybe you need to go back review some of the dog pile posts and me calling for some calm.

Mistakes happen and they are being rectified.
Don’t make me to the target of why the devices did not perform… Mr “I’m Grumpy”.

 

[AudioJester]

Is it wrong to offer differing views and perspectives ?
Or do you want me to stop? (Or is it just an astute observation.)

Never suggested anything of the sort.

Just curious, as after Alan's nefarious posting with fake accounts, was not too popular around here. By the way, I have some of his original amp offerings.

 

[BeeKay]

The whole rant starts from when he putted the $70 Khadas Tone Board in a nice box and was selling it for $2k (I think)
That,will never heal.

Wait - what?

 

[Sokel]

Wait - what?

You're new here probably,use the search function for March stuff and you'll see.

Edit:here:

Review and Measurements of MARCH audio dac1

This is a review and detailed measurements of the new MARCH audio dac1 dac. It is the brainchild of our member @March Audio and is on loan to me. It retails for USD $449 but has an introductory price of $380 as of this writing. The company is located in Australia which should be an advantage...

www.audiosciencereview.com

 

[BeeKay]

Thx. Quite sobering. Sad to read this.

 

[SMPSGuy]

But in reality, its not.
Clearly you've never worked in manufacturing or in the IT systems that capture and track the data.

And you haven't spent any time really thinking about the problem.
Go look at your automobile.

Sorry I went for a kip.

It really sounds like you are trying to rescue yourself, or justify your High IT expert wage, by making the problem seem more complex than it actually is.

In what way is an automobile comparable with a March Audio Amplifier?

Last time I checked high cost audio equipment does not get its labels rubbed off either within the warranty period or after it is sold on so that's the death of one of your other straw men unless the product gets stolen and someone takes out its VIN(s) with an angle grinder.

What's that... Two buffer boards. Two Amplifier Boards and perhaps Two PSU's, possibly one. Those are your major high value components. I guess they will come with manufacturer serial numbers. SHA256 them together and you have a label for the box for the things that matter.

I do apologize for coming up with an IT adjacent solution to your problem.

Elsewhere I am

https://www.analog.com/media/en/technical-documentation/product-selector-card/RS485fe.pdf

years old and would have been the person who gave you the production data from the test equipment I designed and installed running against XT clones under TurboPascal to lose in your dirtybase. No the manufacturing company did not make cars but they banged out more product per day than we are talking about here.

I appear to have tooted.

It really sounds like you are trying to rescue yourself, or justify your High IT expert wage, by making the problem seem more complex than it actually is.

 

[pma]

Purifi has said the IMD issue occurred only close to clipping,

No!
Look at post #1 of this thread. 50W peak into 8ohm is far from being close to clipping!! Anyone should look at first post of the thread before posting all those second guessing here. Facts, friends, not opinions.

The main problem is that there is a little of independent testing, or if it happens, the tests are "soft" (like ASR 5W 19+20kHz test) and the reviewers do not push the DUT hard enough.

 

[SMPSGuy]

Thats not what has actually been said.

That's why I used 'supposedly'. Otherwise it might be useful if those involved got their collective heads together and put out a coherent picture with a single definitive release of what actually happened rather that ratting on each other.

How about using this as a shared experience and sharing the resulting knowledge across all assemblers to build better product. At the end of the day your only differentiator is how you bolt the stuff together. You might be the next one to make a whoopsie.

 

[Sokel]

At a distant point of view,using a (whatever) module is no different than using a resistor,or a cap for your built.
It only happens that Purifi is famous and (short of) guarantees (some) of the end result.

Well,any component can be faulty out of the box,a resistor,a cap or a module (and I was the only one that suspected this and wrote it right from the start of the thread)
It's the one that assembles/builds/etc the end result that is responsible,and Buckeye recognizes that.
Purifi may have took it upon themselves,and that's a gesture of grace but they very well could just blame it on the assembler and his lack of testing the end result for a flagship.

We see an amp with a brand on it,we shouldn't care what's inside,just how it delivers.

 

[mcdn]

Remember March speakers and the binding posts? That was a MA issue rather than a supplied component. No boutique manufacturer will be completely immune to these kinds of issues - it’s how they deal with them when identified. By the way, do you have some sort of connection with March? You seem to be forever defending him across this forum

@Holmz lives in the same town as Alan. I live 5 hours north of them both. I auditioned an early version of Alan’s Sointuva speakers in my house. Alan has a problem with the way he communicates online, which I tried to help him with but ultimately it wasn’t worth my time. His products are well engineered but some people have experienced issues with after sales service.

 

[Sokel]

@Holmz lives in the same town as Alan. I live 5 hours north of them both. I auditioned an early version of Alan’s Sointuva speakers in my house. Alan has a problem with the way he communicates online, which I tried to help him with but ultimately it wasn’t worth my time. His products are well engineered but some people have experienced issues with after sales service.

That's why companies hide the engineers in sunless,distant rooms.Interaction with other people does never work

Seriously now,of all people engineers should be the ones to value expertise on each subject.
And marketing is one of the most important,one can never have enough of it.