The Official Fiio E9 Thread with Video Unbox-Review
Nov 7, 2010 at 1:28 PM Post #166 of 752


Quote:
Seems like nobody has issues with the performance itself; just nitpicking on silly "inconveniences".
 


well yes but in case you haddnt noticed were  talking about amps and DAC's for headphones, most people would be happy with the junk that usually come with DAP's so by the very fact we are here means we are a picky fussy bunch
 
Nov 7, 2010 at 1:39 PM Post #168 of 752
Don't get me wrong, I do understand the appeal of extra bells and whistles. It's just considering how many hours in a day one can listen, and how many seconds (or even fractions of) to push an extra button or slip a case on and off just do not add up to me to where it can be considered a factor of any kind.
 
To me it's like having a remote control... for your remote control.
 
If anything, call me easy to please.
 
Nov 7, 2010 at 1:50 PM Post #171 of 752
I suppose I understand more looking at it from that angle. But that's where it counts most isn't it?
 
Besides, I have seen a few products that allow EQ through the line-out (lol) but I don't think I've ever seen something that will dock with the casing on; with good reason.
 
Nov 8, 2010 at 7:49 AM Post #172 of 752


Quote:
I suppose I understand more looking at it from that angle. But that's where it counts most isn't it?
 
Besides, I have seen a few products that allow EQ through the line-out (lol) but I don't think I've ever seen something that will dock with the casing on; with good reason.



Why we make a desktop amp with dock for E7:
 
1, First, it can help the user get a better and economic solution for both home use and portable use!
 
2, It is user friend design, like the dock of iPod,  you don't need to connect lots of cable but just plug the E7 to the dock, them you get usb signal, you get charging , you get line out!
 
3, the Hi Fi world need some new concept, we hope we can encourage more poeple go into the hifi world!  just like our E3, E5, E7!  you all know the price is a big fator that let most people off high quality audio products!
 
 
FiiO Stay updated on FiiO at their sponsor profile on Head-Fi.
 
https://www.facebook.com/FiiOAUDIO https://twitter.com/FiiO_official https://www.instagram.com/fiioofficial/ https://www.fiio.com support@fiio.com
Nov 8, 2010 at 8:03 AM Post #173 of 752
Fiio is definitely a front runner and pioneer of making high quality products for an accessible price. Anyone who says otherwise needs to get their heads out of their ass, Not everyone can afford a $300 amp and $200 dac. For just $200 or so you can get a GREAT solution and save up all that extra money for the most important part: THE HEADPHONES.
 
I for one definitely KNOW that if it wasn't for Fiio's E7 and now E9, I wouldn't have gotten into higher impedance headphones. Thanks to Fiio, I can truly enjoy my cans the way they were meant to be enjoyed.
 
Do I believe that there is a significant upgrade by going to expensive amps? Sure, but I'm sure you'd have to hit something worth 3 or 4 Fiio E7/E9 combos, which no matter how you slice it is a price not many people are willing to pay even if they DID have the money. As far as transparent amps go, I wholeheartedly believe that the increase in sound quality over the E7/E9 combo won't be worth the price asked.
 
Nov 8, 2010 at 8:18 AM Post #174 of 752


Quote:
Fiio is definitely a front runner and pioneer of making high quality products for an accessible price. Anyone who says otherwise needs to get their heads out of their ass, Not everyone can afford a $300 amp and $200 dac. For just $200 or so you can get a GREAT solution and save up all that extra money for the most important part: THE HEADPHONES.
 
I for one definitely KNOW that if it wasn't for Fiio's E7 and now E9, I wouldn't have gotten into higher impedance headphones. Thanks to Fiio, I can truly enjoy my cans the way they were meant to be enjoyed.
 
Do I believe that there is a significant upgrade by going to expensive amps? Sure, but I'm sure you'd have to hit something worth 3 or 4 Fiio E7/E9 combos, which no matter how you slice it is a price not many people are willing to pay even if they DID have the money. As far as transparent amps go, I wholeheartedly believe that the increase in sound quality over the E7/E9 combo won't be worth the price asked.

 
Thanks! We belive that there already have so may high end device in the market! and there are some famous brand in headphone/earphone, but unfortunately, and the price is not so high too! but there are very few company/brand who can provide good amp in affortable price!
 
The market research shows more and more people try to use headphone to enjoy music but not the speakers! it is you who encourage FiiO keep developing more high quality audio device for headphone, because it is a small market !
 

 
 
FiiO Stay updated on FiiO at their sponsor profile on Head-Fi.
 
https://www.facebook.com/FiiOAUDIO https://twitter.com/FiiO_official https://www.instagram.com/fiioofficial/ https://www.fiio.com support@fiio.com
Nov 8, 2010 at 8:54 AM Post #175 of 752
I have a pretty noobish question:
 
If I hook up two headphones at the same time, does a multiple input amp like the E9 (or even the E7) work harder to power the headphones? I ask because I actually have my DT990s on my 6.35mm jack, and my desktop speakers (with it's own volume control, so I keep the volume regulated) on the 3.5mm input. I don't use my desktop speakers often, and 90% of the time are off, but I was wondering if this is stressing the E9 more when driving something like my 600ohm DT990s than if I had the speakers or another headphone unplugged...
 
Another example is:
 
The K701 and DT990/600 are close in volume level despite very different ohm ratings, and was wondering if it's okay to have them both plugged in and gain the same benefit as if I only used one at a time. Just curious. I'm completely new to understanding how an amp's internals work and my first assumption iwas that the 990/600 is getting less juice to drive them when I plug in something else in that is also being driven...
 
Nov 8, 2010 at 9:19 AM Post #176 of 752
The 3.5mm and 1/4" jacks are wired in parallel, with the 3.5mm jack containing some resistors in series to help add some sanity to the volume out of high sensitivity IEMs.
 
Based on what I've seen of the E9's circuit and datasheets from TI, it will provide plenty of power to drive two headphones connected simultaneously.  You should not notice a drop in volume when you connect a second headphone because the outputs are connected in parallel and the E9 is able to provide enough current output for both. Headphones. 
 
I don't know if the E9 can drive two 16 Ohm headphones in parallel - I think it can but I am not sure - but two 32 Ohm headphones in parallel should not be any problem at all, especially since there is a 33 ohm output resistor on the 3.5mm jack.
 
Jack
 
 
Nov 8, 2010 at 9:26 AM Post #178 of 752


Quote:
I have a pretty noobish question:
 
If I hook up two headphones at the same time, does a multiple input amp like the E9 (or even the E7) work harder to power the headphones? I ask because I actually have my DT990s on my 6.35mm jack, and my desktop speakers (with it's own volume control, so I keep the volume regulated) on the 3.5mm input. I don't use my desktop speakers often, and 90% of the time are off, but I was wondering if this is stressing the E9 more when driving something like my 600ohm DT990s than if I had the speakers or another headphone unplugged...
 
Another example is:
 
The K701 and DT990/600 are close in volume level despite very different ohm ratings, and was wondering if it's okay to have them both plugged in and gain the same benefit as if I only used one at a time. Just curious. I'm completely new to understanding how an amp's internals work and my first assumption iwas that the 990/600 is getting less juice to drive them when I plug in something else in that is also being driven...


 Usually the high impedance headphone need high voltage, low impendance headphone need high current. so it can drive 2 high impendance headphone quite well at the same time !  but if you plug two low impendance headphone , the amp may refuse to work
 
 because the current is higher than the protective current!  but due to E9 have enough power store! it is not a problem to dirve 2 32ohm headphone at the same time ! you can just have a try! in fact, the output of E9 can drive some high sensitive speakers!
 
 
FiiO Stay updated on FiiO at their sponsor profile on Head-Fi.
 
https://www.facebook.com/FiiOAUDIO https://twitter.com/FiiO_official https://www.instagram.com/fiioofficial/ https://www.fiio.com support@fiio.com
Nov 8, 2010 at 9:34 AM Post #179 of 752
Ah okay. Thanks for the lesson guys. I read about high current and high voltage, and to be honest it sounds like exactly the same thing to me. XD At least I know it'll be okay to leave my desktop speakers plugged into my 3.5mm jack while I use my headphones. I have tested it myuself and don't notice anything different in sound quality or volume. Many thanks!
 
Nov 8, 2010 at 7:01 PM Post #180 of 752


Quote:
 Usually the high impedance headphone need high voltage, low impendance headphone need high current. so it can drive 2 high impendance headphone quite well at the same time !  but if you plug two low impendance headphone , the amp may refuse to work
 
 because the current is higher than the protective current!  but due to E9 have enough power store! it is not a problem to dirve 2 32ohm headphone at the same time ! you can just have a try! in fact, the output of E9 can drive some high sensitive speakers!
 


well, even E7 can accomodate 2 headphones with impedance 40 ohm, so I'm sure E9 also will fine with that.
 

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