Bowers & Wilkins 801 D4 Signature Review: The Ultimate Flagship Floorstanding Speaker!br br br Today, I’m thrilled to share with you an in-depth review of a truly remarkable piece of audio engineering: the BOWERS & WILKINS 801 D4 SIGNATURE 3-WAY FLOORSTANDING SPEAKER. This flagship model from Bowers & Wilkins’ 800 Series Signature line promises to deliver an unparalleled listening experience. We’ll dive into its design, features, and most importantly, its performance.