Soundigital 16kd

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Pm me a photo of them. I'll tell you when I see them. But sure there irfp460lc or could be irfp460 non lc or Fdh44n50----500 volt/ 44 amp. These here are very powerful.
Then there's lower voltage higher current irfp350 or 360 also. Good luck
 
These chips are also called ultrafets, not standard hexfets, mosfets.

I have a 16k and Im wondering on the output mosfet what are the numbers they look like they been removed by a dremel or something are these mosfet 4004? Please help me locate what they are.

If these are the ultrafets and you want to use high power n channels to switch out, make sure gate resistors are matched accordingly.
 
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