irfz44n for audio ?!

[xXBrunoXx]

Hello, im new to this forum
I have build a few bjt amps but i want to try a mosfet one ( i have listen to tda7294 wich has mosfets ) and i dont really like the sound
I have a few irfz44n and i thought to build an quasi-complementary amp with them just to see
I have found on this forum someone build an quasi-complementary n channel mosfet amplifier ( the final schematic had one mosfet and one bjt in the output ) and i saved one earlier schematic from that post from him ( SORRY I cant remember your name ) here;s the schematic
What can i change to use irfz44n instead of IRF840
and is the schematic working ? without mistakes
please have a look

 

[xXBrunoXx]

Also , SGND and GND ? for what stands SGND ? can someone explain please

 

[meanman1964]

SGND=signal ground
GND = ground

 

[Pafi]

Now this is a strongly asymmetric ClassB amplifier with not very high loop gain, so don't expect high quality! Quiescent current needs to be set (with the number and type of diodes), and C7R12D6 has no reason to be.

 

[Pafi]

(This is not quasy-complementary. No symmetry.)