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FiiO E12DIY Limited Edition Version---DIY your own sound ! - Page 48

post #706 of 2221
Quote:
Originally Posted by jamato8 View Post
 

The AD8599 is a little warm and unexciting. A little flat for my liking. I prefer the opa627 as it is more dynamic and there is a better contrast between instruments, voice and transparency. The opa627 also produces a larger soundstage and one that is more layered. 

Jamato, have you had the opportunity to compare the Muses against the opa627?

Regards

post #707 of 2221
Quote:
Originally Posted by Chefano View Post
 

Jamato, have you had the opportunity to compare the Muses against the opa627?

Regards

Not yet. I need to get a couple of the Muses. Should be getting some soon. I will say that I have gone back to the 627 and notice improvement in all areas to the 8599 but the 8599 is a very nice op amp and in no way, not enjoyable to have in the musical chain. 

 

I think the E12 DIY hits way above its price but then James did say he isn't making anything on the amp so I would guess it would sell for 300 or so and still it would be in the 5 or 6 hundred dollar sound bracket. 

post #708 of 2221

Just wondered how it's possible to change the op-amps without moding the circuitry to match ?

post #709 of 2221
Quote:
Originally Posted by laughingbuddha View Post
 

Just wondered how it's possible to change the op-amps without moding the circuitry to match ?

 

Which means some opamp will not sound better than other opamp in the same circuit, while a few just won't work, and why you need to try different opamp to find out which is better. All part of the fun. But most opamp (at least for those commonly used for audio) can run quite well in a simple cmoy style circuit. In fact, that's what you will find on many portable amps out there. Even some of the really expensive one is no more than a cmoy with better power supply section.


Edited by ClieOS - 1/25/14 at 7:24pm
post #710 of 2221

That is why I love tubes. You can truly optimize the circuit for a particular tube. The D76 RCA sounds best at max mA bias. They don't last as long but are the most dynamic and transparent. And so it goes. 

post #711 of 2221

Ive ordered the muses from the Japanese retailer (http://akizukidenshi.com/)  thanks nasudajin, lets wait!

How about the buffers? Have you tested something better that the stock ones?

 

 

Reagrds!

post #712 of 2221

You're all costing me money!!

 

I haven't gone as far as Muses yet, but I've just ordered a bunch of 627s for my various amps. :evil:

post #713 of 2221

The other two buffers option are LT1010 and HA-5002 (which require special adapter). LT1010 is less powerful than the stock but also has less coloration overall. HA-5002 is very clean and transparent but it has to be mounted on special adapter as it isn't pin compatible to the BUF socket in E12DIY and you need to be careful when using it since it doesn't have any short circuit protection (meaning you need to stop the music from playing before unplugging your headphone or turn the amp off), or else you might damage the chip accidentally if the volume is loud and the short is over 2 seconds.

post #714 of 2221

I have used the HA5002 for years and never turned the amp on or off while plugging or unplugging the headphones and have not heard of anyone having any problems. I am not trying to contradict you but I just have not seen the problem and have used them for 9 years. 

 

I am using the 5002 in the E12 DIY right now. 

post #715 of 2221

Well, I am just trying to be careful as there is a real possibility there due to the lack of short circuit protection. That's why it is called accident.

post #716 of 2221

I just start modding mine. Had some blackgates PK inside a box, why not?

*

 

Just giving them a nice first burn. Then I will change the resistors and increase the Bandwidth and see what happens

:biggrin:

Pleasee, when modding.. disconnect the battery and the buffers/opamps FIRST!

post #717 of 2221

 

I have 2 boxes of Black Gates, will have to see which ones to try. 

 

The HA5002 are sounding very clean, as usual. Working well in the E12 DIY. 

post #718 of 2221
Quote:
Originally Posted by jamato8 View Post
 

 

I have 2 boxes of Black Gates, will have to see which ones to try. 

 

The HA5002 are sounding very clean, as usual. Working well in the E12 DIY. 

 Its a really good improvement to change the opamp psu caps (ohhh the bass is muuuch better!) after 100hs I will add some ceramic in parallel.

 

I will order the HA5002 and the adapters =D, lets check how it sounds with the muses! 

post #719 of 2221

The Brown Dog don't get you low enough with the standard pins because they allow for a 5002 to be soldered under the board as well so you can run two buffers per channel at a time. The legs have a step on them so the pins would have to be heated and pushed up so the step is even with the bottom of the board. Now the board will mount flush with the socket and you can close the case. I have some very rare Xin 5002 adapters that have thicker traces and the pins have no shoulder, so they allow the adapter to go down flat to the socket. I have the Brown Dog also, since I got them to make these up but they wanted to make it so one board could be used for 1 or 2 buffers, which was my suggestion but in this case, there is too much standoff for the E12. 


Edited by jamato8 - 1/26/14 at 12:00pm
post #720 of 2221
Quote:
Originally Posted by jamato8 View Post
 

The Brown Dog don't get you low enough with the standard pins because they allow for a 5002 to be soldered under the board as well so you can run two buffers per channel at a time. The legs have a step on them so the pins would have to be heated and pushed up so the step is even with the bottom of the board. Now the board will mount flush with the socket and you can close the case. I have some very rare Xin 5002 adapters that have thicker traces and the pins have no shoulder, so they allow the adapter to go down flat to the socket. I have the Brown Dog also, since I got them to make these up but they wanted to make it so one board could be used for 1 or 2 buffers, which was my suggestion but in this case, there is too much standoff for the E12. 

Thanks for the help Jamato. Ive already ordered the browndog without the pins installed (I think Im luck).

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