DAO Follower vs F3 Headphone Amp

thanh1973 · 28th October 2009, 11:09 AM

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.

EUVL · 28th October 2009, 06:19 PM

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

guglielmope · 28th October 2009, 07:57 PM

Hello,
what is DAO?
Ciao
Guglielmo

thanh1973 · 28th October 2009, 09:58 PM

I hope this thread takes off.
Because you DAO follower headphone amp didn't get the attention it deserved.

thanh1973 · 10:02 PM

Quote:

Originally Posted by guglielmope

Hello,
what is DAO?
Ciao
Guglielmo

Have a look at the attachments

woody · 28th October 2009, 10:49 PM

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.

thanh1973 · 28th October 2009, 11:11 PM

Maybe you should build the DAO

Steve Eddy · 28th October 2009, 11:13 PM

Quote:

Originally Posted by woody

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

EUVL · 07:19 PM

I also have a circlotron DAO if you really want to go balanced.

Downscaling Zen v.9 for use as headamp

Patrick

thanh1973 · 29th October 2009, 08:22 PM

Thanks Patrick

28th October 2009, 11:09 AM	#1
thanh1973 diyAudio Member Join Date: Nov 2006 Location: Melbourne	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. __________________ "an amp so simple, even a cave man could build it"

28th October 2009, 09:58 PM	#4
thanh1973 diyAudio Member Join Date: Nov 2006 Location: Melbourne	I hope this thread takes off. Because you DAO follower headphone amp didn't get the attention it deserved. __________________ "an amp so simple, even a cave man could build it"

28th October 2009, 11:11 PM	#7
thanh1973 diyAudio Member Join Date: Nov 2006 Location: Melbourne	Maybe you should build the DAO __________________ "an amp so simple, even a cave man could build it"

29th October 2009, 07:16 PM	#9
EUVL diyAudio Member Join Date: Oct 2003 Location: Optical Valley	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.

29th October 2009, 08:22 PM	#10
thanh1973 diyAudio Member Join Date: Nov 2006 Location: Melbourne	Thanks Patrick __________________ "an amp so simple, even a cave man could build it"


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28th October 2009, 06:19 PM	#2
EUVL diyAudio Member Join Date: Oct 2003 Location: Optical Valley	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

28th October 2009, 07:57 PM	#3
guglielmope diyAudio Member Join Date: Nov 2004 Location: Udine	Hello, what is DAO? Ciao Guglielmo

28th October 2009, 10:49 PM	#6
woody diyAudio Member Join Date: Jan 2002 Location: Tyrone Ga. U.S.A.	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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