RND Portico 5033

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krabbencutter

Well-known member
Joined
Jul 11, 2018
Messages
234
Location
Germany
I've finally acquired a 5033 and here are some PCB shots. It will take a while before I can come up with a schematic, but I've already made good progress with the BoM. I wouldn't be suprised if the EQ topology is related to the Amek Mozart RN. Interestingly the EQ gain stages seem to be discrete and are built around the following six transistors: PN4250A, 2N5210, 2N5087, (2x) A1085 & 2N5209. There's also two BD437 transistors, presumably on the output. The ICs are all NE5534. Let me know if you have any questions 🥳
Edit: uploaded backside images
 

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