Iv'e had 2 Vox amps and one Vox Phantom bass. The bass was made in Italy and was playable and sounded OK but not in the same class as Fender Precision. The amps, one was a solid state and I got rid of it, swapped it for something with more grunt. The other was an AC 30 Top Boost. It was very good but I traded it in on a Fender Twin and have never regretted it, I prefer Fender. But the Vox are OK.
Back in the 60's they had a bad repuytation for not travelling well and in the grtoup I was in the bass player had one and he had a few problems.
I don't know if they still have that, I doubt it, they must have fixed that by now.