It's one of the biggest lightning rods for criticism of drum corps in the last 10 years. It's the elephant on the front sidelines that few people discuss in-depth unless they’re complaining about what they don't like: Amplification. In today's Field Pass, Dan Potter takes a look at how the Blue Devils are making the most of electronics and amplification in 2017, including one audio effect that brings a piece of the corps’ past into the future.