The Blue B7 Large Diaphragm Bottle Cap is an interchangeable capsule for the Blue Bottle studio microphone. A variety of interchangeable capsules are available; each with its own frequency, tonal and pickup pattern characteristic. The B7 is a large diaphragm condenser capsule with a cardioid polar pattern and classic vocal quality.

Suggested applications for this capsule include vocals, background vocals, saxophone, flugelhorn, clean or distorted electric guitar, pedal steel and slide guitar, organ, conventional jazz recording.