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Old 28th October 2009, 11:09 AM   #1
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Default DAO Follower vs F3 Headphone Amp

I was wondering if you guys can help me espescially Grey and EUVL.
I already have F3 boards, but after reading a few comments about the DAO follower headphone amp. I am now a bit unsure which one to build.
The people who have built the DAO follower headphone amp think it is good, while no one I know has used the F3 as a headphone amp.
It would be nice if EUVL could post his latest schematic here for reference.
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Old 28th October 2009, 06:19 PM   #2
EUVL is offline EUVL  Europe
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There is no latest schematics other than the TCS version that Steenoe has built with great satisfaction. There are only 3 or 4 people who have announced building the DAO, and I don't know of any of them has been using F3 for headamp. So I guess your only way to find out is to build both and compare.

The DAO suits low impedance headphones better. Optimum is below 100 ohm.
Hope this helps.


Patrick
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Old 28th October 2009, 07:57 PM   #3
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Hello,
what is DAO?
Ciao
Guglielmo
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Old 28th October 2009, 09:58 PM   #4
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I hope this thread takes off.
Because you DAO follower headphone amp didn't get the attention it deserved.
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Old 28th October 2009, 09:59 PM   #5
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Quote:
Originally Posted by guglielmope View Post
Hello,
what is DAO?
Ciao
Guglielmo
Have a look at the attachments
Attached Images
File Type: jpg dao tcs follower v1.jpg (39.4 KB, 1236 views)
Attached Files
File Type: doc A brief update on the DAO with Taylor CS.doc (27.5 KB, 389 views)
File Type: doc DAO Follower w Taylor CS.doc (105.0 KB, 451 views)

Last edited by Melon Head; 28th October 2009 at 10:02 PM.
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Old 28th October 2009, 10:49 PM   #6
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I am not a headphone user but have wondered wouldn't a scaled down SOZ
make a good headphone amp? I know a 3 contact headphone plug wouldn't
work you would ned some type of plug with 4 contacts. Sorry just always
wondered about that.
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Old 28th October 2009, 11:11 PM   #7
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Maybe you should build the DAO
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Old 28th October 2009, 11:13 PM   #8
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Quote:
Originally Posted by woody View Post
I am not a headphone user but have wondered wouldn't a scaled down SOZ
make a good headphone amp? I know a 3 contact headphone plug wouldn't
work you would ned some type of plug with 4 contacts. Sorry just always
wondered about that.
Well, you could use a pair of line output transformers and common the bottoms of the secondaries and use a standard 3 contact headphone plug. The price would be the added output impedance due to the transformer's winding resistances.

Also, there are already a number of "balanced" headphone amps out there. Headroom got it started and unfortunately established the most absolutely retarded "standard" of using two full size 3 pin XLRs for the headphone connection (one for the left channel, one for the right), so you end up with a big pair of goat testicles hanging off your headphone cable.

Some "balanced" headphone amps though include a single 4 pin XLR which isn't nearly so retarded although a full size XLR is still rather stupidly large for a headphone connector in my opinion.

A 4 pin mini XLR would be preferable, though some of the DIYers and aftermarket headphone cable makers complain it's too small for their cables, some of which would be better suited for loudspeaker cables.

se
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Old 29th October 2009, 07:16 PM   #9
EUVL is offline EUVL  Europe
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I also have a circlotron DAO if you really want to go balanced.

Downscaling Zen v.9 for use as headamp



Patrick

Last edited by EUVL; 29th October 2009 at 07:19 PM.
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Old 29th October 2009, 08:22 PM   #10
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Thanks Patrick
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