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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.
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