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Prototype of E9

post #1 of 73
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
post #2 of 73
Very nice - any release date? Too bad the E7 is not in the same brushed aluminium style case
post #3 of 73
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...
post #4 of 73
Thread Starter 
E9 will not support iPod,iPhone as original plan , and may used OPA2134+TPA6120A!
post #5 of 73
Any ideas on release date or approximate price?
post #6 of 73
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?

post #7 of 73
Thread Starter 

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

post #8 of 73

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
post #9 of 73
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!

post #10 of 73
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.

post #11 of 73

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
post #12 of 73

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

post #13 of 73
Thread Starter 

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

 

post #14 of 73
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.

post #15 of 73

No RCA inputs?

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