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Studio Projects VTB1RK Rack Kit for VTB1
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Studio Projects VTB1RK Rack Kit for VTB1

This new rack kits holds up to 2 VTB1 preamps in a single rack space.

VTB1 Features

  • 48 Volt Phantom Power
  • Phase Reverse
  • Variable Input Gain Control On Detented Pot
  • 1/4" D.I. Jack On Front Panel
  • High Pass Filter
  • Descrete Solid State Class A/B Design
  • TRS Insert
  • Mic/Line Switch
  • VariableTube Blend On Detented Pot
  • Meter Read Select Between Input and Output level
  • Switchable Impedance between 50/200 Ohm
  • 5 position LED metering
  • XLR mic input
  • Balanced outputs on XLR and 1/4"
  • External AC Power Supply For extreme Low Noise Operation
  • Output Gain Control On Detented Pot

Applications

  • A superb vocal mic pre with warm transparent character
  • Great for use as a Tube DI Box
  • Great for production, broadcast, and voice over work
  • Perfect for the professional and home project studio
  • A quality vocal mic preamplifier suitable for all vocal styles
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VTB1 Specifications

  • Maximum Gain:
    • Mic In to Balanced Out: 72dB (60dB preamp gain, 12dB output gain)
    • Line In to Balanced Out: 42dB (30dB preamp gain, 12dB output gain)
    • Distortion/Noise (THD + Noise):
      -20dBu input-mic; 0dBu input-Line; Both measured at +15dBu output
    • Mic or Line In to Balanaced or Line Out: <0.0015% (Blend set full CCW- no tube)
    • Mic EIN: -128dBu (150 ohm source, 60dB gain)
  • Frequency Response (20-20kHz, ref 1kHz):
    • -20dBu input, +15dBu output Mic In to Bal Out: +0 /-0.25 dB
    • 0dBu input, +15dBu output Line In to Bal Out: +0 /-0.5 dB
  • Phase Response (20-20kHz, either input): <+/- 15 degrees
  • Input Impedance:
    • Mic Input (Rear switch in 200 ohm position): 2000 ohms
    • Mic Input (Rear switch in 50 ohm position): 300 ohms
    • Line Input (Front panel TRS jack): 1.5 meg ohms
  • Output Impedance:
    • Male-XLR Balanced Output: 100 ohms (50 ohms each leg)
    • TRS Line Out: 300 ohms (Impedance Balanced)
  • Insert Jack (TRS):
    • Nominal Level: Approx 0dBu
    • Located between SS preamp stage and tube/output stage
    • Tip=Send: 50 ohms output impedance
    • Ring=Return: 7500 ohms input impedance

 
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"Not only are products top quality, but AMS is the only company offering payments as an option. Very good to consumer pockets." Dec '08