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Prototype of E9

post #1 of 73
4/2/10 at 10:53pm
Thread Starter 
Attachment is the photos of our new Desktop headphone amplifier E9! still developing! any suggest will be welcome!

Main features:

Docking station for E7, support:
1, USB DAC function when the E7 is pluged!
2, Standard line singnal output (2Vrms)!
3, Per amp function with pre out ( output level control by the volume pot)
4, USB in/out so the E7 can decoding the digital signal from USB and output to E9!

Standard desktop amplifier function!
1, With 3.5 and 6.5 mm standard headphone socket with different power out!
2, Gain selector!
3, Power input DC12V/1A
4, Output power: 1.2W+1.2W
LL
LL
LL
LL
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post #2 of 73
4/14/10 at 4:48am
Very nice - any release date? Too bad the E7 is not in the same brushed aluminium style case
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post #3 of 73
4/14/10 at 9:57am
Does the E9 not work with putting an iPod in the top any more?



Also I think I would prefer a slightly smaller volume knob

It is nice to see the progress being made...
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post #4 of 73
4/22/10 at 11:18pm
Thread Starter 
E9 will not support iPod,iPhone as original plan , and may used OPA2134+TPA6120A!
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post #5 of 73
4/24/10 at 5:59am
Any ideas on release date or approximate price?
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post #6 of 73
5/19/10 at 5:02pm
Quote:
Originally Posted by feiao View Post

E9 will not support iPod,iPhone as original plan , and may used OPA2134+TPA6120A!


is there any reason you changed your original plan to support the ipod/iphone?

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post #7 of 73
5/19/10 at 6:48pm
Thread Starter 

The outlook will look stupid if we put dual dock on the top of E9! ( one for E7, one for ipod/iphone)!

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post #8 of 73
5/20/10 at 9:31pm

Can this be powered via USB, It would be great if you have the option connect thru a normal iphone connector ( i don't know that you call it) and still get power from USB and connect to itunes on your PC.


Edited by zer08ight - 5/21/10 at 2:34am
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post #9 of 73
5/21/10 at 12:58am
Thread Starter 

Not, it can not powered Via USB, cause the USB port can only provide 5V/500mA power, it is not enough to dirve some headphone like HD600, HD650, The output of E9 is over 1W per channel!

 

The output of the power adaptor will be around 15V / 0.5A!

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post #10 of 73
5/30/10 at 5:46pm
Quote:
Originally Posted by feiao View Post

The outlook will look stupid if we put dual dock on the top of E9! ( one for E7, one for ipod/iphone)!


I disagree. I think it'll be fine.

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post #11 of 73
6/30/10 at 12:55pm

What is bitrate when E9+E7 work together? 192K/24bits or not?

I've found that E7 use Wolfson WM8740 chip support 192K/24 bit, but when E7 operated alone ,its bitrate less.


Edited by sunny25 - 7/18/10 at 6:52pm
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post #12 of 73
6/30/10 at 5:45pm

There is a line in so you can connect an iPod via the FiiO L3 PCOCC- A cable

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post #13 of 73
6/30/10 at 6:42pm
Thread Starter 

E7 can not support 24b/192k digital music format!

 

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post #14 of 73
7/2/10 at 11:13am
Quote:
Originally Posted by geob View Post

There is a line in so you can connect an iPod via the FiiO L3 PCOCC- A cable


ฺBy this L3, I got a great sound, Better than connected FiiO L2 from iPod to E7.

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post #15 of 73
7/2/10 at 11:27am

No RCA inputs?

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