I've been working hard to find a Professional to assist you with your question, but sometimes finding the right Professional can take a little longer than expected.
I wonder whether you're ok with continuing to wait answer. If you are, please let me know and I will continue my search. If not, feel free to let me know and I will cancel this question .
Please note, I am just a moderator category, I can only try and find experts to help, I can't answer the question itself.
We will continue to look Professional to assist you.
Thank you patience,
, sorry delay, I'm in the US. What is the model number of your Stagg amp? How many buttons are working now?