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EposVox
16
Sep 23, 2016
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Gallius_Caesar
0
Sep 23, 2016
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N0gaijup, they changed it, the 19 Ohm wasn´t there...realy strange...And am i the only one where the status of the Shipment is still the 17. in Secaucus, NJ, US ? im from Germany by the way
Will
8470
Chief Product Officer
Sep 24, 2016
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N0gaiHey N0gai,
Kunal forwarded me your post. You're right, the drop page did originally say 50 Ohm and 15khz - 22khz, then on August 25th we changed it to 19 Ohms and left the 15khz - 22khz, and now the box says 19 ohms and 20hz - 20khz.
Is it confusing? Yea, it's confusing, sorry for the confusion.
Did the product change from when we launched the drop to now? Nope. Everyone who joined this drop got the exact same thing the reviewers got, the same thing Unbox Therapy got, the product has not changed.
So why the different printing and changes? Simple miscommunication between MD and HiFiMAN. They sent us one set of specs to begin with, but that was a simple email mistake that stood until we received corrected information on Aug 25th.
As far as the Frequency Response changing from 15-22 to 20-20, this is ultimately a printing choice by HiFiMAN. Does the headphone extend down to 15hz? Yes. Does it extend up to 22khz? Yes. It emits signal at both those frequencies. TBH, that spec is pretty meaningless though, you should focus on the frequency response graph listed on the description page.
Realistically, the frequency response of the HE-350 could be listed as 10hz - 25khz, so would that be better? No, because it could be putting out 1db at 10hz or 25khz because it's so rolled off at either end, but it's still putting out sound, so you can still list it in the specs. This is why you get high end headphones with Frequency Response listed as 5hz to 100khz. Sure it makes sound at all those frequencies, but it'll be so quiet you can't hear it (or it's outside the range of human hearing, which stops at 20khz).
It's a lot like laptop batteries, how a company can list "9 hour battery life" on their website, and not tell you it's "9 hours battery life" with the display set to the lowest brightness, the wifi turned off, and the HD on idle. This is why we always include a frequency response graph on our pages, so you can see the relative volume levels at every frequency within the stated range of human hearing (20hz to 20khz).
To conclude, what's listed on the page did change, the product did not change, you shouldn't use a "Frequency Response" spec (in pure number form) to make any decisions, find a frequency response graph from a reliable source.
Hopefully that helps, let me know if you have any other questions.
Kunal forwarded me your post. You're right, the drop page did originally say 50 Ohm and 15khz - 22khz, then on August 25th we changed it to 19 Ohms and left the 15khz - 22khz, and now the box says 19 ohms and 20hz - 20khz.
Is it confusing? Yea, it's confusing, sorry for the confusion.
Did the product change from when we launched the drop to now? Nope. Everyone who joined this drop got the exact same thing the reviewers got, the same thing Unbox Therapy got, the product has not changed.
So why the different printing and changes? Simple miscommunication between MD and HiFiMAN. They sent us one set of specs to begin with, but that was a simple email mistake that stood until we received corrected information on Aug 25th.
As far as the Frequency Response changing from 15-22 to 20-20, this is ultimately a printing choice by HiFiMAN. Does the headphone extend down to 15hz? Yes. Does it extend up to 22khz? Yes. It emits signal at both those frequencies. TBH, that spec is pretty meaningless though, you should focus on the frequency response graph listed on the description page.
Realistically, the frequency response of the HE-350 could be listed as 10hz - 25khz, so would that be better? No, because it could be putting out 1db at 10hz or 25khz because it's so rolled off at either end, but it's still putting out sound, so you can still list it in the specs. This is why you get high end headphones with Frequency Response listed as 5hz to 100khz. Sure it makes sound at all those frequencies, but it'll be so quiet you can't hear it (or it's outside the range of human hearing, which stops at 20khz).
It's a lot like laptop batteries, how a company can list "9 hour battery life" on their website, and not tell you it's "9 hours battery life" with the display set to the lowest brightness, the wifi turned off, and the HD on idle. This is why we always include a frequency response graph on our pages, so you can see the relative volume levels at every frequency within the stated range of human hearing (20hz to 20khz).
To conclude, what's listed on the page did change, the product did not change, you shouldn't use a "Frequency Response" spec (in pure number form) to make any decisions, find a frequency response graph from a reliable source.
Hopefully that helps, let me know if you have any other questions.
Armstrong01
45
Sep 24, 2016
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WillThanks for explaining the frequency.
However, the impedance (ohms) matter. I don't want to drive them on a second lowest amp volume or lower the OS sound output. Yet this is exactly what I'll probably have to do when I get them. 50 ohms would be much more comfortable with an amp and still driveable via phone etc. Had I known these were 19 ohms I would have bought a less powerful amp.
However, the impedance (ohms) matter. I don't want to drive them on a second lowest amp volume or lower the OS sound output. Yet this is exactly what I'll probably have to do when I get them. 50 ohms would be much more comfortable with an amp and still driveable via phone etc. Had I known these were 19 ohms I would have bought a less powerful amp.
TheProfosist
135
Sep 24, 2016
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Armstrong01they seem to take more power than comparable 32ohm and even 50 ohm headphones that I have for equivalent volume so youll have to wait and see.
TheProfosist
135
Sep 24, 2016
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EposVoxbased on what I have experienced this sounds more correct at least when it comes to sound volume
Armstrong01
45
Sep 24, 2016
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TheProfosistGlad to hear my recent amp purchase won't come to waste.)
Substoot_Teechr
1
Sep 24, 2016
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Gallius_CaesarMine are stuck in Secaucus, NJ too. And i live on Brookyn, NY. How about that!!!
Will
8470
Chief Product Officer
Sep 24, 2016
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Armstrong01Yup, I can 100% understand how that would impact your amp purchasing decision. If it causes a problem, a potential remedy could be an adapter with a resistor attached. Let me know how it works when everything arrives.
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The frequency response is different, too!!