Kef R 3.What speakers are you using with the PA5 currently ?
Kef R 3.What speakers are you using with the PA5 currently ?
Thanks for those quick replies for a newbie.Amir doesn't test reliability and there's no way he really can....
Wow! That is just an unbelievable statement.While Amir never updated his PA5 review regarding its high failure rates, I note with interest that his review posted today of the LA90 Discrete states "P.S. Power amplifiers are least reliable audio products (due to high currents and voltages involved). New designs sometimes need to prove themselves in this regard. So if you are risk averse, please don't be the first to purchase this amplifier."
Nothing known.Is there any consensus or knowledge on what is failing here when they get static in one channel or has Topping ever commented? I've read through a while, but I haven't found.
I own a PA5 for 1 year, every week used. No issues so far.
This made some sense to me:Is there any consensus or knowledge on what is failing here when they get static in one channel or has Topping ever commented? I've read through a while, but I haven't found.
Which is pure speculation. All we know is he ripped the thing apart, put it together again, and it worked.This made some sense to me:
Post in thread 'Topping PA5 Review (Amplifier)'
https://audiosciencereview.com/foru...pping-pa5-review-amplifier.28512/post-1350283
“maybe micro degradation of one of those opamps, ne5532 is very reliable, not sure of that opa1612 tho.
or cracked solder joints due to the potting compound contracting/expanding over time.”
Of course, but as you say: it may be a lead. It will remain difficult to proof the claim without access to a substantial amount of PA5s, and putting them to a test. I would go for a ‘clinical trial’: 100 PA5s without the potting, and 100 standard ones, all playing at high volume until failure (perhaps with controlled switching them on/off from time to time). Then do a comparative ‘survival analysis’ on both groups, something like this could occur:Which is pure speculation. All we know is he ripped the thing apart, put it together again, and it worked.