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Blue Microphones Robbie
Microphone Preamp

OUR PART #:  ROBBIE

The Blue Microphones Robbie is a Class-A discrete tube microphone and instrument preamplifier.
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Our Price: $999.99
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The Blue Microphones Robbie is a Class-A discrete tube microphone and instrument preamplifier. With no ICs and only the highest-quality discrete components from input to output, Robbie is one of the quietest (-131 dB EIN @ 50?) and most detailed (THD 0.006%) tube preamps available today. It features audiophile-grade ultra-low noise metal film resistors and polystyrene capacitors, and provides the user with an electronically-balanced, fully discrete input stage, tube gain stage (ECC88 twin triode), and an electronically-balanced solid-state output stage. There is no switching crossover distortion anywhere in the completely balanced audio signal path. The Robbie also achieves 34dB headroom before clipping.

The front panel of the Robbie features a large backlit potentiometer (gain) and 1/4" hi-Z instrument input. On the back, you'll find the power cable input, power switch, balanced XLR mic input, balanced XLR line output, polarity switch, -20 dB pad, input selector switch (mic/instrument) and phantom power on/off.

Blue Microphones Robbie Specifications:

  • Minimum Gain: 8 dB
  • Maximum Gain: 68 dB
  • Frequency Response (+ / - 2 dB ): 10Hz-100kHz
  • Noise @ 60 dB gain (10 Hz - 30 kHz, 50 ohm source):-131 dB EIN
  • Noise @ 60 dB gain (10 Hz - 30 kHz, 150 ohm source):-129 dB EIN
  • THD + Noise @ 60 dB gain (10 Hz-20 kHz, +22 dBu output): < 0.006%
  • Phase Response @ 60dB gain (50Hz-20kHz, +22 dBu output): < 5┬░
  • Common Mode Rejection Ratio (50Hz-20kHz, 100 mV input): 60dB gain > 64dB; 30dB gain > 75dB
  • Max. Input Level (8dB Gain, 20Hz-20kHz): +22 dBu w/o pad
  • Maximum Output Level (20Hz-40kHz @ 10kohm): +34 dBu
  • Mic Input Impedence (20Hz-20kHz): 5kohm (2x 2.5kohm)
  • HI-Z Input Impedence: 1Mohm
  • Output Impedence: 50ohm (2x25ohm)
  • Phantom Power: +48 VDC, +/- 1.5 VDC
  • Power Consumption: 8W
  • Power Requirements: 115/230 VAC, 50/60 Hz
  • Dimensions: 8.5" L x 8.25" W x 5.25" H

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