PrimaLuna Dialogue Premium Preamplifier. DESTROYS SPEAKERS!!

I agree with Ilocquin. Why is it so diffifult to believe with all the hundreds of thousand components manufactured yearly that some are of poor quality or design? I guess the logic is? if it was not "me" that bought some defective gear it must not exist? Also why is it hard to understand that with so many products made in hundreds of factories in China that QC can fail? If a company has moved manufacturing to China, is it not to cut costs to improve profit? Is it not possible to believe that a supply of cheaper parts are chosen over another more expensive load? What about the influx of counterfeit parts in China? Why do so many people believe manufacturing CEOs are always honest and always want to do the right thing? Cmon use your brain, not every single audio component made is made correctly and not every audio brand exec is honest and does the right thing. BTW I don’t think Primaluna sales will suffer from this post! I am sure all the fans of PL don’t have to worry that the company will fold.
I think that most audio forums actually serve an important function to INCREASE sales of many brands. But I think since this is a forum to exchange ideas, experiences, and the glory of musical enjoyment...we also can (and should) talk about the bad or ugly that has happened. If we don’t do that, it really is not an open forum. The forum appears to be more like brand advertisement, not a healthy exchange of ideas and experiences.

I am not defending PL. I don't own an PL gear. I think it fairly clear that KD is acknowledging a problem with the OP's preamps. My protest is with respect to the over-arching demand that every piece of PL gear be recalled and inspected. Chicken Little is screaming that the sky is falling down. Name just about any complex product known to mankind-cars, refrigerators, and yes, audio gear, and there are defective samples. Look how often the gear sent to S'Phile for review demonstrates a defect! Shite happens. My 2017 VW Golf GTI has a drivers side mirror plagued by excessive wind noise and a windshield that is badly distorted on the passenger side. I am not calling for VW to do a product recall over these two defects. They have enough problems with recalls :-).

@ibocquin Hm, Its been a bit of a mystery to me as to why Krell has been spreading a false rumor that tube preamps push DC; I'm thinking that your experience might explain it.

@erik_squires  With regards to the PL preamp- if a high frequency snubber cap, the failure may have caused the preamp to make ultrasonic noise powerful enough that the amp made enough power to damage the speaker. If that is the case, my theory about the AC line may be out the window.

It ain't just us audio geeks with our precious and pampered gear piles who crave tubes, there are millions of happy tube guitar and bass amp users dragging these things around the world or just staying home and enjoying the reliability and tone of what is basically the Industry Standard. Old leaky caps in my Deluxe…worked fine for 50 years...