Time Out says
Don’t roll your eyes too far up when you visit this medium-sized mall and find audio cables going for a few thousand bucks. The Adelphi specialises in high-end hi-fi equipment, from standing speakers to turntables to the more arcane stuff like digital-to-analogue converters and phono pre-amps. There are also a clutch of second-hand record shops. Be prepared to be given the snooty nose at a few of the boutiques, though – these guys are hardcore audio nuts.