Pocket headphone amplifier advice ??

[Dxvideo]

Hi all,

I am planning to have an iPod mod (for my old 60GB Photo iPod) from;
http://www.redwineaudio.com/iMod.html
This guy says very good things about this mod (I think its a bit expensive but hope it will worth!)

Anyway, after this modding my iPods headphone output will go to the hell. So I will need a really little headphone amp for my iPod. Of course it will work with some little batteries (may be one or two 9v ones)

I saw some projects in headfi forums with just one (or two in parallel) opamp like OPA134.

I have an Ultrasone DJ1 (64ohms and 103dB/1mW) and a Philips SHP805 (32ohms and 104dB/1mW)

So, do you think just one OPA134 will be enough to drive these headphones?

Thx..

[angchuck]

http://www.headphoneamp.co.kr/bbs/zb...id=diy_sijosae

enjoy

[Dxvideo]

Voaw....
Good source (but in Korean )
Thx..

[xaudiox]

Originally posted by Dxvideo
Hi all,

I am planning to have an iPod mod (for my old 60GB Photo iPod) from;
http://www.redwineaudio.com/iMod.html
This guy says very good things about this mod (I think its a bit expensive but hope it will worth!)

Why dont you "Imod" your ipod yourself.. its not that difficult and it will not cost you an arm and a leg.. .You can do it for $20 or less..

Check here on how to do it..

[xaudiox]

For Headphone amp.. take a look at the Mini3 from amb.org.. http://www.amb.org/audio/mini3/

[angchuck]

Don't worry, i am not korean too.

i know you want something a lil' more than a cmoy....

[Dxvideo]

Originally posted by xaudiox


Why dont you "Imod" your ipod yourself.. its not that difficult and it will not cost you an arm and a leg.. .You can do it for $20 or less..

Check here on how to do it..

Woaw! Saving 250$ plus expenses.... But do you think I can do all these? I am not good at SMDs...

Originally posted by angchuck
Don't worry, i am not korean too.

i know you want something a lil' more than a cmoy....

Sure... But Mini3 is a good alternative I gues..

[xaudiox]

You can always ask someone to do it for you.. besides the money u save is enough to buy a new ipod or new headphones

[theAnonymous1]

How small do you need it to be? I built a very compact amp based on the OPA551/2. It is powered by a 3.7v lithium battery and DC-DC converter to get +/-11v supplies. Runtime is around ~8 hours at full volume.

http://i11.tinypic.com/6lwbcqc.jpg
http://i4.tinypic.com/8ellpw3.jpg

[Dxvideo]

This is really "tiny"... Congrats..
Do you have some schematics & layouts to share?

Thx..