Overview: Superstar DJ-and-producing duo Sigma help Jon Bentley test out the latest in multi-room speakers just in time for the party season. Elsewhere, the G Team shows its flexible side limbering up with comedian and self-confessed yogi Suzi Ruffell to test out the latest yoga tech. Georgie Barrat bags herself an exclusive coaching session with gamer Brendon Lewis, while back in the studio Harry Wallop drops by to help viewers bag the best deals on Black Friday and Cyber Monday.