At the moment, I have to give an answer before 5th March, since my claim in court was rejected by Parcel 2 go. As you rightly said, I correctly indicated the name of the product and they offered me to take extra insurance, which I did (copy of the invoice attached). Moreover, in the step-by-step process of registering online, I did not see any restrictions on the type of product.
In the process of submitting my first claim on the insurance, I was denied and I was given the following statements:
Your amplifier should have been packed in a hard case.
Even if it was packaged properly, we will not accept any responsibility for any damage.
Next, I was presented with a huge list of goods that are not covered by insurance, which includes absolutely everything except, perhaps, only books. I have copies of emails and responses from their lawyer in full.
docs1.pdf