Fresh From The Oven: iBasso P5 "Falcon"
Aug 15, 2015 at 9:22 PM Post #107 of 388

lin0003

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Can you buy the amp with out the power supply?

Don't think so, I'm under the impression that they come as a package. 
 
I'm curious how much of an impact the power supply is going to have on the amp when it is used with IEMs. 
 
Aug 15, 2015 at 11:08 PM Post #110 of 388

audionewbi

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Thanks Jamato and Trance for your tips. I heard one diy OPA637SM who did not disclose what he used inside beside the 637SM and ever since it has haunted me.
I am willing to compromise and go with the OPA627SM, it is that I am not sure what comes inside the P5, do I need to order things separately, (eg the BUF and the opamp).
 
I know i have to get the 627SM but I am not too clear on whether I need to get the BUF or it already comes installed. 
 
 
edit: I just checked the manual and got my answer.
 
Manual link indicates that "OPA627*2, BUF634U*4, and BUF634P*4 are mounted on the P5"
 
 
http://ibasso.com/uploadfiles/20150815/201508151829012550.pdf
 
I think ibasso site has compatibility issue with chrome.
 
Aug 15, 2015 at 11:29 PM Post #112 of 388

T.R.A.N.C.E.

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Honestly the stock config for the P5 is pretty epic, double stacked BUF634 are hard to beat as buffers imo. You could try swapping the amp stage from 627 to 637 for giggles, but would be restricted to high gain only. Or could leave 627 in amp stage, swap out buffer from stacked BUF634 to the OPA637 to see how they sound acting as buffers (again limited to high gain). Just way to many possibilities in configuration. Will drive you mad 
evil_smiley.gif

 
Below is a pic of a prototype P5 that has been fully tricked out with Muses02 metal can, BUF634P, BUF03 metal can's and 4700uF capacitors. Also cool to note is the capacitor's are swappable thanks to a screw in post, didn't make it to production P5 though sadly.
 

 
Aug 15, 2015 at 11:56 PM Post #113 of 388

audionewbi

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I already have the portaphile 627x which already has 3 x OPA627 , 6xBUF634. What I miss is a little more treble energy which I hear OPA627SM offers. 
 
Aug 16, 2015 at 12:30 AM Post #116 of 388

T.R.A.N.C.E.

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Might be a bit of a gamble, but there is a pretty good chance that it will work like a charm and you will be in audio heaven 
biggrin.gif

 
I hope ibasso give the option to buy only the P5, the asking price is too high for me atm and I'm sure a large chunk of it is due to that power supply bundled.
 
Aug 16, 2015 at 11:01 AM Post #117 of 388

CJG888

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Will OPA637 work in the P4?
 

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