Nathan Amp ID40

Nathan Amp ID40 is a “challenge design” raised by a group of hobbyist,  audiophile and purist from  the www.elab.ph forum, where they question which one is the best :

  1. a PNP differential amplifier at the input stage and NPN VAS,  with DNY40W, or
  2. a NPN differential amplifier at the input stage and PNP VAS  (Nathan Amp ID40)

Nathan Amp ID40 is basically called,  Inverted DNY40W.

Here is a picture of the DNY40W with a PNP differential amplifier and NPN VAS,  check this link for more Information :   DNY40W Project

 

Here is a picture of the inverted version with a NPN differential amplifier and PNP VAS, this is a prototype version with the green color pcb, the final one that I can proudly offer to you guys is the red one

Final  PCB design

Would you like to see the Nathan Amp Baby?