Adele will reportedly be using technology worth £400,000 to protect her voice during her Las Vegas residency. The 34-year-old superstar – who postponed her ‘Weekends with Adele’ at The Colosseum at Caesars Palace in January just 24 hours before the opening night and claimed COVID-19 had rendered her show impossible to put on – is set to finally take to this stage this Friday (18.11.22) for a concert series lasting three months, with the Sin City venue having installed a “complex” system which will guarantee her the “best possible air” while she sings. A source told The Mirror: “They’ve had com…