Radial Engineering Power Tube Vacuum Tube Microphone Preamp

The Radial Engineering Power Tube is a class-A vacuum tube microphone preamplifier that captures the essence of the original sound source while imparting the rich harmonics, warmth, and character of a transformer-coupled tube circuit.

Radial Engineering Power Tube Vacuum Tube Microphone Preamp Details

The Radial Engineering Power Tube leverages the warmth and tone of a 12AX7 vacuum tube using an innovative non-radiating charge pump that supplies 140 volts to the tube to deliver the excitement and character of a high-voltage vintage tube amplifier.

This feeds a class-A balanced output stage that together, can produce as much as 60dB of gain, making the Radial Engineering Power Tube ideal for use with all microphones.

For even more character, activating the Air switch adds a slight edge to a vocal track or sparkle on acoustic guitar, while low frequency resonance is easily tamed using the high-pass filter.

Features

  • High voltage 12AX7 tube drive with 60dB of gain
  • Smooth sounding Jensen transformer input
  • Hand selected 100% discrete class-A electronics
  • Tube circuitry provides vintage warmth and character

Specifications

  • Circuit Type: 100% discrete tube class-A preamplifi er
  • Frequency Response: 20Hz ~ 20KHz +0dB/-1dB
  • Input Impedance: 2.2k Ohms
  • Mic Preamp Gain: +63dB
  • Maximum Output: +28dBu
  • Output Impedance: 150 Ohms nominal
  • Equivalent Input Noise (EIN): -122dBu @ maximum gain
  • Dynamic Range: >93dB
  • Total Harmonic Distortion (THD+N): 0.03%
  • Intermodulation Distortion (IMD): 0.012%

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The details provided above are drawn from historical documents like advertising brochures or user manuals. They’re shared without bias or review. This info is given solely for your consideration, helping you gauge its usefulness to you.

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