No one has mentioned the Dimension, short lived but quite a nice shape and decent pickups. The Starcaster bass was also quite innovative or was it just a short scale version copy of the Les Paul Signature (later the Jack Casady).
That looks really interesting and I’d like to know how it performs for bass as it only has a 6.5 ins speaker + a tweeter. The other thing I’m unclear about is the battery, lithium ion, but is it a rechargeable or do you replace it/them when it’s expired after the 8 hours?
Stagg is not a brand that is well considered. It’s generic for all sorts of instruments made in the far east and badged Stagg. For £150 look on the marketplace here for a brand that is a guitar maker. Many instruments are made by far east factories and then badged but QC by the brand.
Result, @Bef, did you get shown how to do this yourself? If not check YouTube for instructions as it may change when you put on new strings or sometimes with the weather. Adjusting the truss rod isn’t hard, take a look.