We only remove products from the Buyer's Guide when manufacturers advise us the products are/are being discontinued - we simply don't have the page-space to include every product we've ever tested.
As commented here before, that'll change once the BG goes online next year, when products can live on forever...(though obviously with any relevant note re availability).
Meanwhile, all other current NAD products we've tested are still very much listed in the BG - i've just randomly flicked to CD players, for example, and can see a couple nestling next to each other.