Looking at that invoice I realise that the bits in the corner of the Bass Centre logo letters are fingernails. I always thought it was an effect that makes it look 3D, round and shiny, like when drawing balloons.
I don’t like it, it freaks me out 😅
I also followed the links you provided, and from there found this link to the patent:
https://worldwide.espacenet.com/publicationDetails/biblio?KC=A&date=19940823&NR=5339718A&DB=EPODOC&locale=fr_EP&CC=US&FT=D
If functionally it does what you need, then yes. It just records what you play and plays it back so there is no special consideration or concerns for bass (loss of low end etc.) .
I would add the Ashdown b-social to that list. Great bit of kit with wireless bass input and Bluetooth in for aux (no Bluetooth out however). I don’t think they make them anymore, so second hand market only.