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Solo UL noise cut ten-fold!
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j633295 View Drop Down
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Joined: 16 Apr 2010
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Points: 29 		Post Options Post Options   Thanks (0) Thanks(0)   Quote j633295 Quote  Post ReplyReply Direct Link To This Post Posted: 27 Apr 2012 at 9:37pm
Graham, do you plan to make similar changes on the output stage for the VOYAGER PORTABLE for low impedance headphones (like Grados :)? If so, I will order one when its ready.
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Graham Slee View Drop Down
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Joined: 11 Jan 2008
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Points: 16314 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Graham Slee Quote  Post ReplyReply Direct Link To This Post Posted: 28 Apr 2012 at 9:01pm
Regarding the two posts above...

Just look what happens when I take an in-depth look at the old uA741 op-amp...

...I discovered a lot of things about Grado headphones....

(clue: RC4558 used in RA1 is a dual uA741 - and no, I'm not using either...)
That none should be able to park up and enjoy the view without a smartphone and the knowledge in how to use apps
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jamescodway View Drop Down
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Points: 320 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jamescodway Quote  Post ReplyReply Direct Link To This Post Posted: 28 Apr 2012 at 11:46pm
Graham, thank you. 

Just re-read your 11/3 post in this thread... made more sense (relatively) this time around. My take-away is that you emulated the electronic effect of the RA-1 on the can without prejudicing the underlying UL process/impact on other cans. Bravo.

To my reading of headphone-related forums, there is still common frustration at finding a good match for RS-1, 325i etc.  (esp. SS). This may be a useful marketing angle for the Diamond.

I will certainly be considering either a 2nd upgrade and/or going the whole hog!

Smile

Best

James

PS Reading a HD800 thread on Head-fi from '09/'10 and a very well respected figure was saying very good things about the SRGII in relation to much more expensive chinese and american valve amps.


Edited by jamescodway - 05 May 2012 at 2:31pm
Voyager - HD25
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