That’s an interesting stance. I would have thought that vendor specs and price were two key contextual elements to any product review?Not at all. My conclusion has nothing to do with what the vendor has claimed. I look at all the data, apply my subjective impression of features and build quality, and give a recommendation. A 15 pound amplifier producing 450 watts with incredibly low distortion is a great find and would provide amazing performance for users. No way do I want to tell people not to buy it because of what they say on their website. I am not a website police.
Yes, I make a few exceptions here and there but the above is the rule.
I hate to say it,but I told you so
Or the power supply used. The issue mentioned seems to be related to HF distortion performance. Filter coil core? I am curious.I suppose the same fault is responsible for the power figures
You mean even if working right?Yes for the 2 Ohm as the lower efficiency of the module combined with PSUs own losses is not enough if it's rated for 1200 W max.Or the power supply used.
Just wondering, is your permanent negativeness specifically related to Purifi (and Hypex) or just class D in general?Purifi and their latest ass-covering disclaimers. Wow.
Thanks Dylan! Enjoy your time off and have a Merry Christmas! Meanwhile, many in this community will be busy burning down your castle over one review sample that seems faulty. I mean why wait when one can instantly post negativity on forums? The very same forums where manufacturers also do a pretty good job of answering questions of their customers. Makes me wonder why ANYONE would want to build anything nowadays. This hobby isn't dying, we're killing it.FWIW: we have our own data from months ago showing no issue with the amp going into protection during power sweeps and also meeting the power spec goals.
As I have said in our official thread, we will be doing more testing in the new year to further back up what we have already observed on our end.
I am in no way saying JA did anything wrong, is faulty, etc. It is something that at this moment can't be explained and is at odds with previous data. So being the trained scientist I am, will not begin to speculate or draw conclusions until more data is collected and added to the mix.
You seem to be saying that the forums, or rather certain members of ASR, are nitpicking and that one should keep quiet even if an amplifier does not meet the objectives announced by the manufacturer and designer (not the assembler). So here, it seems that the problem stems from a non-existent quality control at Purifi, and the assembler is apparently exonerated, all thanks to the perspicacity of a few ASR members. By the way, I remind you that Stereophile found nothing to criticize about the issues with this amplifier which did not match the specifications ..Thanks Dylan! Enjoy your time off and have a Merry Christmas! Meanwhile, many in this community will be busy burning down your castle over one review sample that seems faulty. I mean why wait when one can instantly post negativity on forums? The very same forums where manufacturers also do a pretty good job of answering questions of their customers. Makes me wonder why ANYONE would want to build anything nowadays. This hobby isn't dying, we're killing it.
Did you verify that this defect existed on those amps?Luckily, the Stereophile monoblocks were the only affected builds we had shipped with this defect.
Perspicacity.. Hardly. The manufacturer stated his intention of looking into these issues discovered during the review. Didn't need arm-chair quarterbacking for him to do so. Also, your assumptions of "non-existent quality control" is exactly what I was referring to.You seem to be saying that the forums, or rather certain members of ASR, are nitpicking and that one should keep quiet even if an amplifier does not meet the objectives announced by the manufacturer and designer (not the assembler). So here, it seems that the problem stems from a non-existent quality control at Purifi, and the assembler is apparently exonerated, all thanks to the perspicacity of a few ASR members. By the way, I remind you that Stereophile found nothing to criticize about the issues with this amplifier which did not match the specifications ..
We will be, yes. I more meant we know because of the batch involved from that shipment from Purifi (which was a very small pilot quantity so easy to trace).Did you verify that this defect existed on those amps?
Thanks for digging into this.
I have reached out to Kal/Stereophile in case they would like to re-measure a new monoblock but I am not at all requesting or demanding that they do.