I have never tried the ear wax removal, so I'm not qualified to offer any meaningful judgement other than it kind of feels at least reasonably logical concept.
However, there is another low cost upgrade I have tried several times with great results: Alcohol. In my younger days I tested mainly with beer and various shots, but nowadays it is usually with red wine, sometimes also with single malt whisky, if it is a cold and dark winter evening. The results have always been sensationally good, although somewhat controversial, because next morning I always find that the volume has been set way louder than what I usually have. There is also a downside, which is that this method should absolutely not used on daily basis.
I'm aware that some people propose various chemical/herbal solutions for similar sound improvement effects, but I find those concepts thoroughly abhorrent.
However, there is another low cost upgrade I have tried several times with great results: Alcohol. In my younger days I tested mainly with beer and various shots, but nowadays it is usually with red wine, sometimes also with single malt whisky, if it is a cold and dark winter evening. The results have always been sensationally good, although somewhat controversial, because next morning I always find that the volume has been set way louder than what I usually have. There is also a downside, which is that this method should absolutely not used on daily basis.
I'm aware that some people propose various chemical/herbal solutions for similar sound improvement effects, but I find those concepts thoroughly abhorrent.