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Radial Engineering TWIN-SERVO
Mic preamp, Jensen 990 Opamp, Dual Jensen Transformers

OUR PART #:  TWIN-SERVO

The Radial Engineering Twin-Servo is a microphone preamplifier with a wide frequency response from 0.5 Hz to 150 kHz.
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Our Price: $999.99
List Price: $1,200.00
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Radial Engineering TWIN-SERVO
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The Radial Engineering Twin-Servo is a microphone preamplifier with a wide frequency response from 0.5 Hz to 150 kHz. Features include a convenient front-panel Neutrik combo connector with choice of XLR and ¼” inputs, a dual-gang potentiometer for level adjustment along with a 10 segment LED meter for signal management. This is supplemented with a 180º polarity reverse switch that toggles the absolute phase, a gentle high-pass filter to eliminate excessive resonance, a -15dB pad to prevent overload, and a 48V phantom power activation switch.

Radial Engineering Twin-Servo Features:

  • Exceptionally wide frequency response from 0.5 Hz to150 kHz
  • Twin-servo topology eliminates capacitors in thesignal path
  • Virtually zero phase shift or bandwidth limitation
  • Oversized Jensen transformers for maximum headroom

Radial Engineering Twin-Servo Specifications:

  • Circuit type: Two stage variable gain all discreteusing original DeaneJensen circuit with IC DC servo. Jensen transformer coupled input and output.
  • Frequency response: 14 Hz to 85 kHz / 8Hz to 100kHz (+/- 1 dB / +/- 3 dB)
  • Total harmonic distortion: 0.004%
  • Dynamic range: 91 dB
  • Input impedance - XLR: 1.3 kOhm
  • Input impedance - instrument: 220 kOhm, unbalanced
  • Output impedance: 75 Ohm
  • Maximum output: +22 dBu
  • Mic preamp gain: +60 dB
  • Common mode rejection (CMRR): -72 dB
  • Equivalent input noise (EIN): -120 dBu @ maximum gain
  • Total Harmonic Distortion (THD+N): 0.004%
  • Intermodulation distortion: 0.004%
  • Power: 110mA
  • Phantom power: 48 VDC - 10 mA (as supplied by 500 frame)
  • High pass filter: 6 dB/octave @ 150Hz
  • Construction: 500 Series module
  • Size: 5.25 x 1.5 x 7" (134 x 38 x 178 mm)
  • Weight: 1.75lb (0.79 kg)
  • Shipping size:  6.75" x 1.875" x 9" ( 171 x 48 x229 mm)
  • Shipping weight: 2.20lb (0.997 kg)
  • Conditions: For use in dry locations only between 5°C and 40°C

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