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Blue Robbie Class A Discrete Tube Mic and Instrument Preamplifier
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    Blue Robbie Class A Discrete Tube Mic and Instrument Preamplifier

    Manufacturer: Blue Microphones

    Item #: ROBBIE   •   MFG #: ROBBIE

    Availability: Usually ships in 3-10 business days
    This item is currently out of stock and will ship the minute we receive it – normally 3-10 business days. Need it sooner? Call 800-522-2025 and we'll make it happen,or email Customer Service for expedited delivery options. Certain Non-Stock Items Valued over $50.00 may Ship FREE UPS GROUND in the Continental US. Multiple quantities of the same non-Stock Item Valued below $50.00 may be ordered to meet the $50 minimum order requirement to qualify for Free UPS Ground Freight. This offer does not apply to certain freight-intensive or hazardous items. Certain restrictions may apply.



      Complete the Circuit

      Simplicity of design. Purity of sound. Robbie is Blue's Class-A discrete tube microphone and instrument preamplifier. All of the technical quality and design innovation that goes into our line of award-winning microphones has been engineered into making Robbie the finest tube preamp available today. With no ICs and only the highest-quality discrete components from input to output, Robbie is one of the quietest (-131 dB EIN @ 50 ohms) 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 the best of both worlds: 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. And if that's not enough, Robbie achieves and amazing 34dB headroom before clipping! Designed from the ground up, this limited production mic pre is like nothing else commercially available today.

      • 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): < 5 Degrees
        • Common Mode Rejection Ratio
        • (50 Hz - 20 kHz, 100 mV Input): 60 dB Gain > 64 dB; 30 dB Gain > 75 dB
        • Maximum Input Level
        • (8 dB Gain, 20 Hz - 20 kHz): +22 dBu w/o Pad
        • Maximum Output Level
        • (20 Hz - 40 kHz @ 10k Ohm): +34 dBu
        • Mic Input Impedance
        • (20 Hz - 20 kHz): 5k Ohm (2x 2, 5k Ohm)
        • HI-Z Input Impedance: 1M Ohm
        • Output Impedance: 50 Ohm ( 2x 25 Ohm)
        • 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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