How to build a 21st century protection board

This one is very compact, I think it would be ideal for the q17 mini
 

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The older version 4 system was the most compact complete system. Later versions were designed to mount on top of the larger power supplies we offered to work with them. That was likely the version Valery had sent you gerber files for. We haven't released the gerber files for later versions.
 

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Thanks for replying, I'm still from the old electronics world and I'm just starting out programming AVR MCUs. Although I'm 58 years old, I can still do the Gerber files here, but programming is harder for me. It was a mistake not to update myself, but I'm trying. Excuse my English, as I use Google Translate. I want to thank you for your time with me and wish you all the best.
 
Jeff do you any pcbs left for Speaker protection, the one you put at the output of the amp ?
I want to use my 21st century protection mainboard with other amps too, I consider it essential to any system and I'm spoiled with it's functionality and durability, just the other day it shut down the NS-amp after a connection mistake I made.
Also, of other modules like Tubsumo IPS ?
 
I actualy found 3 of the version 5 boards in my stash. Spreaker relays, supplies, ect are all interchangable with newer boards.

A couple years ago I put together the front panel display prototype and got it working fairly well, then work got in the way and progress stopped on almost everything. Recently I've switched jobs and have got some more time so i hope to revisit that soon. I used an Atmega328 to run the fron panel. I realised shortly after getting it running that it should be ESP32 based so it's easy to use Wifi oor Blutooth for things like a real time clock or remote functions. Hopefully I can get to that after a few other badly overdue projects.
 
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