HeadPhone Amp

I made an MXR Headphone Amp Clone from http://tagboardeffects.blogspot.jp/2013/01/mxr-headphone-amp.html. However not satisfied because at high gain settings the sound starts to breakup.

Looking into making a version like this ⇒　http://www.minidisc.org/headbanger.html

After reading this, I want to try to make one with the LM386 chip because I have a few in my stock of parts.

Another headphone amp using a single IC.

http://wiringstages.blogspot.jp/2013/12/portable-9v-headphone-amplifier.html


Paul In The Lab lists 2 headphone amp projects.
This one uses the tda2822 audio amp.
http://www.paulinthelab.com/2013/12/mp3-headphone-amplifier-tda2822m.html

... and this one uses pt2308
http://www.paulinthelab.com/2012/05/headphone-amplifier-veroboard.html