[dsavitsk]

Any thoughts?

Component values are on the original schematics -- I added the ones that were not obvious. Changes are to use a simple CCS for the Millett portion rather than the CRD, and to use the version of the Szekeres with the CCS.

 

[rickcr42]

crappy high end from too high an impedance to the mosfet gate on first glance.A simplified CCS on the mosfet does not sound as good as a simple resistor or other resistive element having a suitable "RL" (such as a light bulb) in this particular design design (though far better traces on the scope).Finally the szekeres sound is all about power suply sound being a single ended class-a design so look to the power to the mosfet also.

You need to build a stage,listen to it then add the next stage and "tweek' the circuit by ear not on paper if you want a superior sounding amp.Otherwise you are better off with an already optimised design (for what it does) like the Millett Hybrid built honest