From Blue:
Bluebird SL delivers pristine, highly versatile sound that makes every detail of your performance come to life. With a high-pass filter and -20dB pad, Bluebird SL is ideal for capturing standout vocal performances, expressing the true tone of guitars, piano and more with extended upper clarity, smooth mids and rich lows. Next stop, top-flight sound.
Transducer Type: Condenser, Pressure Gradient
Polar Patterns: Cardioid
Frequency Response: 20Hz – 20kHz
Sensitivity: 28.5 mV/Pa at 1 kHz (1 pa = 94 dB SPL)
Output Impedance: 50 ohm
Rate Load Impedance: Not less than 1k omh
Maximum SPL: 138dB SPL (0.5%)
S/N Ratio: 82.3 dB-A
Noise Level: 11.7
Dynamic Range: 126.3 dB
Power Requirement: +48V DC Phantom Power
Weight: 455g
Dimensions: 222.5mm x 47.5mm
HPF: 100Hz, 12db per octave
PAD: -20dB
Includes: Wooden storage box, Custom shockmount