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Blue Microphones - Bottle Rocket Stage Two Vacuum Tube Mic  From Blue

Fast and versatile

Blue Microphones

Manufacturer's Description from Blue

Designed for speed and transparency, the Stage Two vacuum tube microphone’s transformerless, Class A discrete tube amplifier circuit delivers low noise, superb transient response and utilizes a single hand-selected ECC88 vacuum tube. Like the Bottle, the Stage Two has the ability to hot-swap up to nine different capsules for the ultimate recording experience. The Bottle Rocket Stage 2 is powered by Blue’s innovative Powerstream power supply, which not only ensures ultra-stable performance but features a soft-start feature for maximum tube life and minimal startup time.



  • Flight case
  • Powerstream
  • IEC cable
  • High-definition tube mic cable
  • B8 capsule
  • S3 shock
  • Bonus capsule
Blue Microphones


Transducer Type: Pressure Gradient or Pure Pressure (depending on capsule)

Polar Patterns: Cardioid, Omni, Figure of 8 (depending on capsule)

Frequency Response: 20Hz - 20 kHz

Sensitivity: 50 mV/Pa at 1kHz (1 Pa = 94dB SPL)

Output Impedance: 50 Ohms

Rated Load Impedance: Not less than 1k Ohms

Maximum SPL: 139 dB (2.5k Ohms, 0.5% THD)

Dynamic Range: 130 dB (@ 2.5k ohms)

Power Requirement: External Powerstream Unit

Current Draw: Heater (6V DC0 300 mA, Plate (120V) 5mA - Typical