In the Sony CDP-101 it's a bunch of opamps and basic logic chips. They even abuse some CMOS inverters as amplifiers.
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Ethan Winer Builds a Wire Null Tester
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restorer-john
Grand Contributor
Not really abuse, they love that kind of work- they get sick of just inverting all day. Yes, straight off the PD array. They are cascaded further down the line for their inherent delay IIRC.
RF amp board:
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Thanks Don. I turned 70 last month and I'm busier than ever. But most of what I do is fun, like building this Null Tester device and making the video, so I don't mind. I'm not posting much in forums anymore, but I'm active on Facebook.Aside: Ethan, great to see you posting here again! Hope life has gotten a little more relaxed; you were swamped last time we "spoke". And BTW my family still enjoys your cello rondo, but I still say it needs trumpet...
Sounds great, Ethan! I'd retire tomorrow if I won the lottery, but barring that I still have a few years to go. I don't "do" Facebook so really appreciate you stopping by here!
p.s. Happy (belated) birthday!
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+1 I just can't learn to love facebook.
Guess I'm stuck in the past.
restorer-john
Grand Contributor
Same here. I want to be one of the few who dies having never been on Facebook or ever used it for anything.
Have you noticed, people don't ask you whether you are 'on Facebook' anymore do they?
#metoo
Tried it, abandoned it. And refused to allow it anywhere near my new computers- it is a cancerous data-scraper and devastating to privacy.
This is not a fool's response. Discussed this with Mark at some length. This is a caught fraudster's response.
Graph Feppar
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Some discussion over at CA: https://www.computeraudiophile.com/...-test-for-wire/?do=findComment&comment=906587
OP
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- #232
He spent 9 minutes giving no answer.
I admire him as I would have had to stop after, "thank you for your question." Yes, power cables can have various levels of shielding, etc. But if they make no difference in audio bands, using our own ears in a listening null test, then that is that. It makes no difference that you can show with some instrument measuring high frequencies that it made a difference.
He is also incorrect in saying the dirtiest gear in your home is audio gear. There are plenty that are worse.
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Freudian slip at 4:36?
Paul has that whole avuncular thing down pat. Admirable in its way.
OP
invaderzim
Senior Member
He spent 9 minutes giving no answer.
You cracked his format.
It continues to amaze me that having instant access to incomprehensively massive amounts of stored information does not actually make many people more knowledgeable or informed.
LOL, I knew something was up because I just got several dozen emails with comments people left on my Null Tester video. Paul sure does embarrass himself. It's obvious he knows that he's lying and being disingenuous. Then again, he says he likes and agree with Steve Guttenberg, and Steve is about as clueless as it gets. So maybe Paul really believes his own bullshit? I'll post on his video in a moment, and these are my main points:
Around 4:45 Paul totally loses it as he realizes he has no real rebuttal to my test results. So he changes the subject from RCA signal wires to power cables. Over the next few minutes he explains why his power cables are so wonderful.
At 5:42 Paul says differences that are audible might not show as electrical differences in the signals. WTF? Whatever he's smoking, I'd like some of that too.
At 7:10 Paul says that wires can act as antennas and pick up all sorts of RFI and hum from the air, and Ethan's test doesn't account for that. Well, of course a null test would account for that! What's so silly is Paul apparently didn't even watch my video because I demonstrate exactly that at 21:50 in my video, where I show the difference in hum pickup as I move one wire around.
Then at 7:56 Paul again can't refute my test, so now he changes the subject from the RCA wires I tested to speaker cables and how speaker impedances can vary (which is true). My video is very clear that I use a very low (7 ohms) output impedance to drive the wires, and they go into a 10K resistive input that is absolutely typical of a normal line level input.
I'll add that this past August I emailed Paul and asked him to do Skype video with me where we discuss this stuff then put it on YouTube. At first he said it wouldn't be useful (yeah, right), but eventually I convinced him and he said he'd try to find the time. I'll email him again now and tell him "it's time" to do this.
Around 4:45 Paul totally loses it as he realizes he has no real rebuttal to my test results. So he changes the subject from RCA signal wires to power cables. Over the next few minutes he explains why his power cables are so wonderful.
At 5:42 Paul says differences that are audible might not show as electrical differences in the signals. WTF? Whatever he's smoking, I'd like some of that too.
At 7:10 Paul says that wires can act as antennas and pick up all sorts of RFI and hum from the air, and Ethan's test doesn't account for that. Well, of course a null test would account for that! What's so silly is Paul apparently didn't even watch my video because I demonstrate exactly that at 21:50 in my video, where I show the difference in hum pickup as I move one wire around.
Then at 7:56 Paul again can't refute my test, so now he changes the subject from the RCA wires I tested to speaker cables and how speaker impedances can vary (which is true). My video is very clear that I use a very low (7 ohms) output impedance to drive the wires, and they go into a 10K resistive input that is absolutely typical of a normal line level input.
I'll add that this past August I emailed Paul and asked him to do Skype video with me where we discuss this stuff then put it on YouTube. At first he said it wouldn't be useful (yeah, right), but eventually I convinced him and he said he'd try to find the time. I'll email him again now and tell him "it's time" to do this.
The impression I got was that he was talking about the power cord radiating, though there was certainly some ambiguity! Apparently, audiophiles own crap electronics that respond to things like that, and they're too stupid to understand the inverse square law. And the logic there is a bit weird since power cords are minuscule in length compared to the wavelengths at 60 Hz and the first, oh, 20 or 30 harmonics and compared to the length of wire in the house walls. Funny how using standard IEC cables doesn't seem to degrade the performance of the AP test gear in my lab...
His videos on speakers are even worse. There, it seems that he really doesn't understand the topic at all, on top of the usual genial dissembling for fun and (mainly) profit.
The real problem with Paul's "proof" that his products work is that he never shows a reduction in noise and hum etc at the output of the connected audio equipment. That's all that matters! If his $5,000 "power plant" nonsense reduces noise riding on the AC line from 3 millivolts to 0.3 millivolts, he claims a 20 dB improvement, when in fact there is zero improvement in the actual audio.
svart-hvitt
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An apparent value of ASR is when skilled and experienced engineers tell users who is swimming naked. So we can avoid bad experiences when the tide turns.
Thanks for your comments
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