FXL8 Switching system gutshots

Just ordered a Harley Benton FXL 8 switching system to see how it was made, and if it could be modded.
As I thought, it's quite close to my looper prototype :)


Here are some gutshots :

Main PCB and Stomp switches PCB - as guessed, Wave-X / Vitoos / Joyo are all the same.

Solder quality can be bad...

Why leave so much LED pin metal ?

The relay switches, just like my prototype :)
This means real true-bypass.

The brain. Notice the ULN2803, same as my prototype again :)
The uC seems to be  clocked at 6MHz, and seems to be an STC89C52.

Full main board.

Later I'll see if the main uC can be replaced with my own : this switcher can hold up to 8 banks... why not increase to 16, the LCD is able to display digits from '0' to 'F' after all !
Think I'll change the LED colors to start first :)

More later, there are some components I haven't guessed yet.