Radial Engineering PowerTube - Tube Mic Preamp

The PowerTube 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.

• 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

Vintage tube tone in a modern preamp

The PowerTube 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 PowerTube 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.