Another Class A headamp idea

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Hi all,

Finally, I made some mods on my class A headphone amplifier with OPA134+IRF510...
An externally hosted image should be here but it was not working when we last tested it.

There are two differences between old and new versions,
First- I use a discrete class a op-amp instead of OPA134,
Second- I use an IC based CCS instead of power resistor.

I havent tested yet. However it worked fine on simulator. Except it seems I will some DC offset problems on ouput.

May you say something about that circuit pls?

Thx.
 
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