I never rated the tone controls on a Vox Top Boost to be anywhere near as effective or musically useful when compared to those of a Fender amp. I began with an AC30/6 in 1964 a had a Top Boost in 1967 and the difference was noticeable, prompting me to go Fender after then. My main amp for over fifteen years was the Twin Reverb that in order to sound anything like The Shadows had to be used with no Treble, no Bass and loads of Mid. I think the JBL speakers contributed to that scenario.
I know that I didn't know a lot about amps and how they worked back then and just tried to do the best that I could by experimenting. After briefly going with a Sessionette 75 that became troublesome, I bought a Mesa Boogie Mk3.
These are great tonal amps and I still have a Mk3 as well as a DC-5 n my collection, from which I can get satisfactory Shadows tones when needed.