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Blue Microphones Bottle-Cap B4

Ideal for Ambient Recording


The B4 Bottle-Cap is designed to work with the Bottle and Bottle Rocket microphones. It adds a versatile omnidirectional capsule to your recording setup. It takes inspiration from highly regarded omni tube microphones, with a welcome boost in the low end and a smooth overall tone. Clear highs paired with the punch lows make it ideal for ambient recording. It picks up the detail of orchestral instruments, organ, backing vocals, drums and bowed strings particularly well. It can also be applied as a mic used for capturing any source at a distance.


  • Polar Pattern: Omnidirectional
  • Capsule Type: Condenser
  • Small Diaphragm
  • Designed for use with the Bottle & Bottle Rocket Microphones
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