[roguegeek]

Gonna buy this to match with the Beyer DT770 32 ohm headphones. Source will be iPod classic and HP Laptop. Should I buy the e17 instead?

You'll be more than good with the E07K. Buy with confidence.

 

[BillsonChang007]

The E07K is good but if you wish to go higher, the E17 it is!

 

[thug behram]

The E07K is good but if you wish to go higher, the E17 it is!

Higher in a what way? Sq? I don't car for the extra features and my main headphone is the dt770 pro le 32ohm. Not very hard to drive.

 

[BillsonChang007]

Higher in a what way? Sq? I don't car for the extra features and my main headphone is the dt770 pro le 32ohm. Not very hard to drive.

The E07K have a warmish tone while the E17's are more neutral. Check out ClieOS's review!

 

[thug behram]

The E07K have a warmish tone while the E17's are more neutral. Check out ClieOS's review!

Thanks. I'm will be pairing the amp with a bright can (dt770 pro) and bright source (cirrus logic chip iPod classic) so I think it should match well.

 

[BillsonChang007]

Yep!

Do report back on what you think when you got them!

Your welcome!

Happy listening
Billson

 

[roguegeek]

Hello,

It is probably because of the damping factor. It is not ideal to use low impedance headphone with amp with high output impedance. Your headphone is 32Ohm at 1KHz. It is recommended to use headphone amp with output impedance lower than 4Ohm. The FiiO E07K itself have output impedance lower than 1 Ohm. I recommend you to use that for your low impedance headphone or headphone with impedance of lower than 80Ohm. Use the E09K for headphone with impedance higher than 80Ohm.

The reason why you do not find it a problem pairing your Grado with E09K mainly because the Grado have flat impedance vs frequency thus, IMO any output impedance would not affect it much.

Hope it helps,
Billson

Billson, I tried. I promise I did. I have tried to look up explanations on this concept and I can't seem to get it down. I know this has to do with a low impedance headphone not being able to work with a high output impedance amp. Bottom line, I don't get it. Is there something someone can point me to that will help me understand this concept or can someone give me a simplified answer? Also, what's are the specifications I should be looking for and what is the math that needs to be done with those specs in order to know if a certain can will work with a certain amp?

 

[Kbman]

Is there a 3.5mm Male to Lightning adapter for the iPhone 5? I mean I'm sure there is, I just have yet to find it I will continue to look though!

 

[roguegeek]

  Is there a 3.5mm Male to Lightning adapter for the iPhone 5? I mean I'm sure there is, I just have yet to find it I will continue to look though!

FiiO does need to step up and make one that will work properly like they did with the L9.

 

[BillsonChang007]

Billson, I tried. I promise I did. I have tried to look up explanations on this concept and I can't seem to get it down. I know this has to do with a low impedance headphone not being able to work with a high output impedance amp. Bottom line, I don't get it. Is there something someone can point me to that will help me understand this concept or can someone give me a simplified answer? Also, what's are the specifications I should be looking for and what is the math that needs to be done with those specs in order to know if a certain can will work with a certain amp?

Maybe try understanding this:

You want to make sure the ratio of Headphone's impedance vs amp output impedance is 8:1. The "1" can be lower say 0.3 or lower than 1. Let's take Beyerdynamic DT770 80Ohm version as example.

DT770 impedance: 80 Ohm
Ideal ratio 8:1

80Ohm / 8 = 10Ohm

Therefore, you want to make sure the amp's output impedance is lower than 10 Ohm to avoid damping factor.

At the end of the day, you also want to "check" the amp's signature as well. Some amp may change a headphone's sound signature by a lil but not very noticeable most of the times

Hope it helps
Billson

 

[Kbman]

  FiiO does need to step up and make one that will work properly like they did with the L9.

So basically there is nothing I can do unless I get a old iPhone female to lightning male and then plug it in that way or through the AUX? Something like this.
 

 

[Kbman]

  FiiO does need to step up and make one that will work properly like they did with the L9.

So basically there is nothing I can do unless I get a old iPhone female to lightning male and then plug it in that way or through the AUX?

 

[Hawke7]

I'm trying to decide between a Fiio E10 and a Fiio E07K and want to ask a couple of questions:

Does the device turn itself on and off automatically when plugged into a computer as an E10 would? and
Can I use my regular pc volume controls in place of the buttons on the gadget itself? Does it affect the sound quality noticeably?
 
I'm asking this because i think it would be uncomfortable to always fiddle with the small buttons on the E07K if I had to turn it on and regularly change volume.

 

[Kbman]

I can use the E07K or E17 to power a pair of Q 701's on my computer and phone correct?

 

[BillsonChang007]

Hello,

You will have to turn on the E07K with a button it bypasses both your amp and DAC of your PC thus changing the volume on your desktop does not really affect the sound except for the volume for sure.

Hope it helps
Billson