FiiO E9 Review - Page 7

Sorry, your E7 is belong to the first batch, and it can work when connect to your pc even when it is power off! but it will not damage any component or shorter the battery life because it is powered by the usb!

So why was this 'option' removed in the newer batches?

I'm assuming the E9 can be used as a headphone amp and pre out in it's own right without the E7?

Here's what my issue is and what I'm thinking (hoping). I have a Woo Audio 6 which I absolutely love. Problem is that with my favourite tubes (6SN7) I almost have to max out the volume to use my DT880/600 or T1's to satisfying levels and sometimes it is maxxed if I've had a few sherbets and my drums are a little numb . I'm running my imod straight into the back of the WA6. Would running my imod into the E9 and then into the WA6 give me more gain?

Tell me if I'm talkin' out my ass coz it has been known haha.... Just seems in theory to be a fairly cheap way of overcoming my issue with gain or lack of.

Seems great value for money.

Plz refer the diagram of E9!  http://www.head-fi.org/forum/thread/518997/fiio-e9-pre-release-unboxing-review-part-1/45

Yes, you can use E9 as a pre amp and get enough gain! and the pre amp output is amp by TI's OPA2134, and it is also a decent OP, so you don't need to use the HP out from TPA6120!

And that is what we design it and finaly  find one user who wants this function! :)

BTW, you can change the OP2134 with other high class OP , it have a 8pins golden plated socket! and the supply voltage is +/- 12V, you can find lots of good OP in such situation!

Quote:

Originally Posted by Mad Lust Envy 

So why was this 'option' removed in the newer batches?

Your situation is the reason that we fix the bug! it may make our user confuse about it even it is harmless bug!

Ah, ok. So no harm no foul. At least now I know that I can have my E7 always turned off and utilize the DAC portion to it's fullest with the E9. Thanks so much for the quick response Feiao! :)

Feiao, will there be any difference between the first batch of E9 and the second batch of E9?

I ordered mine yesterday from US Amazon, is it first batch?

Quote:

Originally Posted by Mad Lust Envy 

Ah, ok. So no harm no foul. At least now I know that I can have my E7 always turned off and utilize the DAC portion to it's fullest with the E9. Thanks so much for the quick response Feiao! :)

LoL, you can call me James! I don't know why Jude give us such a user name here!

BTW, need to updated some mistake,  in your situation, the E7 is powered by the 5V from E9 not the USB 5V from your PC, so the power supply is very clear! in fact, it take 50% of time to design a high quality

power to the OP and TPA6120! and about  50% components is used in power circuit! I guess all you should understand the importance of the power supply in a decent amp!

Okay, so to be clear, for my case, is it best to keep my E7 off or on when docked to my E9? Sorry to ask so many question, James. I just wanna make sure I get the best possible combination for my humble setup.

Or is it always gonna be powered by my E9's 5V regardless of whether my E7 is on/off?

Quote:

Originally Posted by Oddworld 

Feiao, will there be any difference between the first batch of E9 and the second batch of E9?

I ordered mine yesterday from US Amazon, is it first batch?

If i recall correctly the first batch is only sold out as of today so your should be the first. And I think the only difference is that there will be a little white marker put on the volume dial so you can tell what position its in.

Quote:

Originally Posted by Oddworld 

Feiao, will there be any difference between the first batch of E9 and the second batch of E9?

I ordered mine yesterday from US Amazon, is it first batch?

Yes, it is belong to 1st batch! and the second batch will be available after 1 month!

The different is very small, includes

1, The volume knob will have a silver/white colour mark to indicate the volume position , so it will be more noticable !

2, The power adapor will add UK/EU version so you don't need to use a converter!

There will have not any change in function and SQ!

Quote:

Originally Posted by Mad Lust Envy 

Okay, so to be clear, for my case, is it best to keep my E7 off or on when docked to my E9? Sorry to ask so many question, James. I just wanna make sure I get the best possible combination for my humble setup.

 

Or is it always gonna be powered by my E9's 5V regardless of whether my E7 is on/off?

In fact, it is the same not matter E7 is  power on or off ! and yes, it is powered by the E9's 5V!

Quote:

Originally Posted by feiao 

 

BTW, you can change the OP2134 with other high class OP , it have a 8pins golden plated socket! and the supply voltage is +/- 12V, you can find lots of good OP in such situation!

This is a yet undiscussed possibility with the E9.  There are 3 OP-Amps in the E9, can we identify what each OP amp is responsible for? 

I found this great comparison of different OP amps, and it is even written within the context of using the OP2134/2132 as the benchmark, so there is a lot of remarks on how the other OP amps sound in comparison to the OP2134. 

http://tangentsoft.net/audio/opamps.html

Jack

Just wanted to drop in and say I'm really impressed how involed FiiO is with the community and feedback! Any other teases for us regarding your "bomb" that you will be realeasing next year?

Quote:

Originally Posted by Riku540 

Quote:

Originally Posted by Oddworld 

Feiao, will there be any difference between the first batch of E9 and the second batch of E9?

I ordered mine yesterday from US Amazon, is it first batch?

If i recall correctly the first batch is only sold out as of today so your should be the first. And I think the only difference is that there will be a little white marker put on the volume dial so you can tell what position its in.

I want to add, that when Feiao talks about "sold out", they are typically describing their sales to distributors and resellers.  For the time being, all the E9's sold by us (including those on Amazon) are from the first batch.

Jack