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Oppo PM-1 Planar Magnetic Headphone Impressions Thread - Page 55

post #811 of 3442

Amazing headphone do that to you. :atsmile:

post #812 of 3442
Quote:
Originally Posted by dpump View Post
 


Thanks to all of you who reported you weren't hearing any amp noise on your PM1's. However, I find it strange that no one is hearing any noise with the high efficiency of the phone. I used to have a Lyr and I heard some background noise and hum with any tubes I tried and low impedance phones like Grado, which aren't as efficient as the Oppo claims to be. And I have read several reports on Head-Fi that people were hearing noise with the Vali, but one responder here said he hears no noise on hisVali?

 

So, my other question is:what is the range you are able to use on the volume control? Are you near the bottom of the range or 9 o'clock or 12 o'clock or what? With the claimed sensitivity of 102 dB I just can't understand how no one hears any noise or has reported that the phones get loud when the volume control is barely turned up. Maybe they aren't really that efficient?


No noise from the Lyr.   Volume control on the Lyr was at 8 to 9 o'clock.   Some times higher with some classical recordings.   Never higher than 10 o'clock.   Some tubes can be noisier than others I guess.

post #813 of 3442
Quote:
Originally Posted by Raptor34 View Post
 


No noise from the Lyr.   Volume control on the Lyr was at 8 to 9 o'clock.   Some times higher with some classical recordings.   Never higher than 10 o'clock.   Some tubes can be noisier than others I guess.


Thanks.

post #814 of 3442
Quote:
Originally Posted by Frank I View Post
 

 

I  am senile:tongue_smile:


Frank,

 

Sorry if I offended you. That wasn't my intention. Just trying to keep all these model numbers straight for myself. I apologize.

post #815 of 3442

:wink_face: I am cool

post #816 of 3442

Can someone tell me how they sound with rock and metal music ?  (Pink Floyd, Rush, Tool, Porcupine Tree, Radiohead, Opeth, etc.)


Edited by YtseJamer - 4/17/14 at 7:30pm
post #817 of 3442
At the NYC meet i heard SACD Dark Side of the Moon with Eddie Current 2A3 Mk2 amp and it sounded great but i had to switch earpads but your preference could be different

Sent from my LG-V500 using Tapatalk
post #818 of 3442
Thanks Oleg.
post #819 of 3442
Quote:
Originally Posted by Frank I View Post

wink_face.gif  I am cool
You certainly are Frank!
post #820 of 3442
Quote:
Originally Posted by Raptor34 View Post


No noise from the Lyr.   Volume control on the Lyr was at 8 to 9 o'clock.   Some times higher with some classical recordings.   Never higher than 10 o'clock.   Some tubes can be noisier than others I guess.
Dang it! I passed on a Lyr and went for an Asgard 2 thinking the Lyr would be noisy with no volume travel. Looks like volume travel is an issue but noise is not. Oh well. The A2 should sell easily enough if I don't like it.
post #821 of 3442

Uhhh...  I'm a buzzkill for the Lyr - somewhat notorious for having bombed the Lyr thread a couple of years ago when I proclaimed that I preferred my LCD-2 rev.1 with the Meier Stepdance over the Lyr, having gone through three different pairs of tubes while borrowing it from a friend for a month, including some expensive Mullards. Despite the LCD-2 not being the end word in resolution, the Lyr sounded every so slightly woolly compared to the Stepdance.  Jason Stoddard graciously offered to test it - I sent it to him - he found it to be in perfect working order - he even gave me a couple of different tubes - but I could still hear a veil imposed by the Lyr, not heard with the Stepdance.  I wouldn't want to throw that veil over the much higher resolving PM-1. And besides...  the PM-1 doesn't need anywhere near that much power.  

 

All that said, resolution isn't as important to some people as it is to others. Without a doubt, I respect that bunches of people love several of the sonic traits that the Lyr can bring to their music - especially with power-hungry headphones.

 

Mike

post #822 of 3442
@zilch

Looking forward to trying the PM-1 at the meet, Mike. Hope you can make whatever date is decided on.

I'm wary of hype trains, and this one certainly has one, but I won't let it keep me from being curious and trying items for myself, usually only when there is little to no cost to myself (at meets mostly). The best way to handle hype trains is to decide for yourself that if you detect a hype train, automatically disable your buying instinct and instead seek out avenues to try them before buying. I'm very against taking advantage of return policies so that is not something I suggest people use as a matter of routine, but as last resort.
Edited by Maxvla - 4/17/14 at 9:53pm
post #823 of 3442

Another Planar I need to consider. This is getting more difficult to choose. Now I have to choose between LCD-X, Alpha Dogs and PM-1.

post #824 of 3442
Quote:
Originally Posted by Creato938 View Post
 

 

Well, Oppo always made pretty bold claims with their products, and Plannar Magnetics are known to benefit from a good amount of power, good headphones amps do give enough power for the PM-1, they claim the PM-1 can even work from a smartphone, i'm not sos rue about that, but they could make a driver that gives a good volume with not so high power, but yeah, people would have noticed that,  but considering it's first headphone for them, they could be not as efficient as claimed.

 

I dont mean any offense with this blunt-sounding statement, but:

1/ All tests indicate that the headphones ARE indeed 102dB/mW efficient

2/ Oppo has a bunch of presumably very smart engineers who know enough about sound and science to design this breakthrough product, who are making this claim

3/ If they can design this product, it should be a fairly simple matter for them to measure its efficiency, dont you think?   

 

Given all this, what makes you think that they are wrong and you are correct?    I mean, it is ok to have doubts - but at some point, you need to have some basis for supporting them, right?    

post #825 of 3442
Quote:
Originally Posted by vkalia View Post
 

 

I dont mean any offense with this blunt-sounding statement, but:

1/ All tests indicate that the headphones ARE indeed 102dB/mW efficient

2/ Oppo has a bunch of presumably very smart engineers who know enough about sound and science to design this breakthrough product, who are making this claim

3/ If they can design this product, it should be a fairly simple matter for them to measure its efficiency, dont you think?   

 

Given all this, what makes you think that they are wrong and you are correct?    I mean, it is ok to have doubts - but at some point, you need to have some basis for supporting them, right?    

 

It's normal to have doubters, but certainly at 102 dB/mW, the PM-1 sure is efficient. It may be just ok straight off of a smart phone but this headphone will definitely have no problems driven by portable amps which is huge in my books as I want to avoid bulky desktop amps.

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