OTO Machines Bam, £439
French effect brand OTO are still relative newbies, but they’re already winning fans. Their reverb unit, Bam, is a great example of why. It’s a digital reverb based on hardware from the ’70s and ’80s, with seven algorithms, plus gorgeous sounding chorus and freeze modes. You might be sceptical about needing a digital reverb at this price, but trust us, it’s great.