A Designs KGB 1tf Instrument Pre Amplifier

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Preamp for guitar and other high impedance signals.

The KGB-Itf is a high input impedance, discrete audio pre-amp designed for high impedance, unbalanced signals including guitar, bass guitar and electronic keyboards. Just as a low-impedance, balanced pre-amp is a tremendous benefit for your microphones signal, a pre-amplifier designed for use with unbalanced high impedance instruments is also a critical component of great sound from a high-impedance sound source.

The KGB Series contains high voltage, discrete op-amps with balanced output transformers by Cinemag, Inc. The KGB- Itf is a single-channel, solid-state unit that works well with guitar, bass or keyboards. It features an all metal chassis, milled aluminum knobs, balanced XLR gold pin Neutrik outputs, Switchcraft 1/4" input jacks, bipolar electrolytic capacitors, 1% metal resistors, blue LED power indicator, four rubber feet and heat vents, as well as three tone controls for high, mid, and bass.

  • Single Discrete Input with Thru
  • Gain Select Switch - High/Low
  • Phase Reverse Switch
  • Ground Lift Switch
  • External Power Transformer for a very low Noise Floor
  • Three Band fixed frequency Tone Filter with 12db cut/boost: High/Mid/Low
  • Balanced, line-level +4db output

Order today and find guitar, bass and keyboard sound you never thought possible.


KGB 1tf Instrument Pre Amplifier Specifications:

  • S/N: Better than 90db (shorted input)
    Output: Xfmr Balanced +4 @ 600 ohms
    Power: 20VAC (rated) 22-27VAC (unloaded) External, +/-24VDC Internal
    Gain: Low = 70db, High = 90db (2Khz source @ .775V)
    Gain: Low = 35db, High = 60db (2Khz source @ .09mv)
    Sensitivity: Lower than .09mv
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