3-in-1 customization. With the A20-HH handheld microphone from Sound Devices, you can streamline your kit. The A20-HH Capsule Collar is threaded on one side to accept the Sound Devices CD1 cardioid mic capsule and Sennheiser capsules. Then by removing just three screws the collar can be flipped over to accept the connection for Shure capsules. You can use all three capsules on one microphone – no adapters necessary.