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GT-40 Tube Condenser Mic

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Overview

A Class A tube mic designed to record acoustic instruments

The Groove tubes GT40 capsule is optimized for getting the most definition and detail out of all acoustic instruments like piano, drums and guitars¦ and the GT legendary low noise GT6205M tube in a Class A triode circuit design provides warmth with detail, adding new dimension to vocal and especially instrument recording.

The GT44 comes standard with a Cardiod polar pattern. An optional omni and hyper cardioid capsules are easily interchanged (sold separately) . A Groove Tubes GT6205 tube powers the electronics in a Class A Design. Included in the system is a PSM1 power supply, multi-pin 25-foot soft audio cable, hard mount, shock mount, AC power cable and mic case.

Features

  • Medium sized all brass capsule
  • Top address design
  • Interchangable capsules for multiple patterns (optional omni and super-cardoid ” sold separately)
  • 3/4" diameter 6-micron evaporated gold diaphram
  • Class A tube electronics
  • -15db attenuation pad
  • 75Hz low frequency roll off switch
  • Nickel-plated all brass body
  • Stainless steel head and grille assembly
Specs

GT-40 Tube Condenser Mic Specifications:

  • Preamp Topology Low Noise Tube based Class A Design
  • Tube Type Selected low-noise GT6205M-USA
  • Polar Patterns Interchangeable Capsules
  • C1 Cardioid (standard)
  • C2 Hyper-Cardioid (optional)
  • C3 Omni (optional)
  • High Pass Filter Switchable 75Hz, 12dB/octave
  • Attenuation Pad: Switchable -15dB
  • Frequency Response: 20Hz - 20kHz
  • Equivalent Noise: 20dB SPL - A weighted
  • Sensitivity: 28mV/Pa
  • Maximum SPL: 130dB-145dB (adjustable w/pad)
  • Maximum Output: 2.8V RMS for 1% THD
  • Typical Load Impedance: >500 Î
  • Output Source Impedance: 200 Î transformer isolated
  • Dimensions: 7.5" long (19cm), 0.85" (2.1cm) max. dia.
  • Weight: 12 oz. (0.4kg)
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