Wharfedale Evo 4.2 Bookshelf Speakers. A Video Review. Taps DasSeptember 20, 2023 I used to always get irritated by bookshelf speakers being called stand mounts. Until of course, I got my hands on these. The Wharfdale Evo 4.2. 'EVO' is short for Evolution. Bookshelf SpeakersReviewsSpeaker Reviews