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Oppo PM-1: A New Planar Magnetic Headphone! - Page 111

post #1651 of 2487
Quote:
Originally Posted by HiFiAudio View Post
 

Review by Secrets of Home Theater and High Fidelity out

OPPO PM-1 Planar Magnetic Over-the-Ear Headphones

Written by John E. Johnson, Jr.

Published on 21 April 2014

It is interesting that the second-harmonic in the 1kHz distortion measurement is higher than the third-harmonic.  Seems to fit what Tyll said in his post a few pages back.   Quoting him:

 

"For example, if the distortion is even-order, it will be much less disturbing than if it is odd-order."  

 

Has anyone who has a PM-1 tried it with tube amplification?  

post #1652 of 2487
I tried with Decware CSP3 for about an hour but planning to get it Wednesday again for longer time to try different tubes
post #1653 of 2487
Quote:
Originally Posted by jazzman7 View Post
 

It is interesting that the second-harmonic in the 1kHz distortion measurement is higher than the third-harmonic.  Seems to fit what Tyll said in his post a few pages back.   Quoting him: "For example, if the distortion is even-order, it will be much less disturbing than if it is odd-order."  

 

It's also in a very narrow frequency range and only really present at high volumes.

post #1654 of 2487
Quote:
Originally Posted by keanex View Post
 

Just finished my PM-1 Review.

 

So this was the first headphone you've ever heard over $500?

post #1655 of 2487
Quote:
Originally Posted by jazzman7 View Post
 

It is interesting that the second-harmonic in the 1kHz distortion measurement is higher than the third-harmonic.  Seems to fit what Tyll said in his post a few pages back.   Quoting him:

 

"For example, if the distortion is even-order, it will be much less disturbing than if it is odd-order."  

 

Has anyone who has a PM-1 tried it with tube amplification?  

The impressions I wrote earlier were all with my Pinnacle amp (with tubes).

post #1656 of 2487
Quote:
Originally Posted by Focker View Post
 

 

So this was the first headphone you've ever heard over $500?

 

Outside of the Audio Technica Ad2000, yes.

post #1657 of 2487

People here are saying shutt up and stop saying bad thing about pm1 with measurement.

Basically  Tyll and other guy who brought up the measurement are saying similar things

 

and now everyone is so respectful~~LOL

post #1658 of 2487
Quote:
Originally Posted by skfktkwjs View Post

People here are saying shutt up and stop saying bad thing about pm1 with measurement.

Basically  Tyll and other guy who brought up the measurement are saying similar things

 

and now everyone is so respectful~~LOL

The problem is that people look into measurements and making their opinion based on them without trying headphones first
post #1659 of 2487
Quote:
Originally Posted by olegausany View Post


The problem is that people look into measurements and making their opinion based on them without trying headphones first

I think it's more than that, specific to the case of the Oppo PM1.

 

There is a stigma around a "newcomer" headphone brand that according to early impressions are literally the best thing ever, crushing the established top headphones. If you put yourself in the shoes of HD800 or LCD2 etc owners who visit this thread and see people discussing how PM1s are better, you'll quickly see why people are wary and/or defensive.

post #1660 of 2487
Quote:
Originally Posted by olegausany View Post

The problem is that people look into measurements and making their opinion based on them without trying headphones first

 

The real problem is that people are basing their opinion on measurements without having a clue what those measurements mean. I can look at those graphs and know exactly what to expect. But most people don't know what a dB is or which frequencies are important and which aren't.

post #1661 of 2487
That is also true because i don't know so only trust my ears but i wish i could learn how to use parametric EQ not just graphical
post #1662 of 2487
Quote:
Originally Posted by bigshot View Post
 

 

The real problem is that people are basing their opinion on measurements without having a clue what those measurements mean. I can look at those graphs and know exactly what to expect. But most people don't know what a dB is or which frequencies are important and which aren't.

That may be true of the general population, but certainly not of most head-fi posters and not those of us looking to spend $1100 on a new headphone. 

post #1663 of 2487
You give our little corner of the web too much credit. I see people on HeadFi making mountains out of molehills every single day in every single thread. There is more knowledge of specs than there is understanding of the context specs fit within. People think that inaudible frequencies are important and distortion lower than the lowest sound floor in a quiet library is significant. How many dB variation from flat is still flat? Very few seem to know. The thresholds of human perceptiion are never applied to these graphs except in the most extreme cases.
post #1664 of 2487

I agree with bigshot. I have been in Headfi for a few years already and I have been into Hi-Fi equipment for over 30 years and I do not have a clue on how to interpret those frequency charts and to be honest I don't care to know because we hear different, we interpret things different and we have different tastes. A headphone could be technically perfect and produce a perfect frequency response chart but maybe I am too sensitive to certain frequencies and I might not like it. That does not mean it is not perfect or not good. It just means it is not for me. That is why IMO there is nothing better than listen and experience it yourself to make a comment or decision which still is relative to you only.

post #1665 of 2487
Well here is another spec that most people here aren't aware of... For people with normal human hearing (not damaged), sound is pretty much the same for everyone. I've seen charts that measure the sensitivity to specific frequencies on multiple people, and they don't vary more than 4 or 5dB. Listening to music, a difference like that would be barely noticeable.

Good sound is good sound. If something has a flat response, low distortion, a low noise floor and a wide dynamic range, it's high fidelity sound and it will sound natural to everyone.
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