That looks like a fairly large dummy load that is probably immersed in oil. each one of those resistors is prob 2W or more. You don't need that much power dissipation for this amp.  They are made like that because you need to use a purely resistive load (i.e. no induction that wirewound...

wow thanks for spotting that, I had messed out big time.    http://bayimg.com/EapOLAAfK   I numbered the MOSFET, 1=G, 2=D, 3=S and made the connections clearer, another thing I need to watch carefully when building.    Thanks again!

Hi All, I've been planning to build a PTP version for quite some time, been reading this (long) post for quite some time. Currently at page 249 (no spoilers please). Unfortunately some of the old posts no longer have linked images working so I may have missed a few things.  This would be my...

HI I would be interested in a couple of boards if you still have some available. Thanks, Antonio