A Designs KGB-II


SKU: KGB II Category:


The A Designs KGB-II is a single-ended, high input impedance, discrete audio pre-amp designed for high impedance, unbalanced outputs such as: guitar, bass guitar, and electronic keyboards.

Just as a low impedance, balanced pre-amp is needed, (designed for use with microphones), a pre-amplifier designed for use with unbalanced high impedance instruments is also required. The KGB Series contains high voltage, discrete op-amps with balanced output transformers by Cinemag, Inc.

A Designs KGB-II Overview

The KGB-II is a two-channel, solid state unit that allows use of both channels for stereo recordings or live performances. This works well with stereo output instruments such as: keyboards or stereo guitar pickups. For bass players, there is freedom to use two basses in a live performance, simply by picking up the other bass and playing without any delay between songs.

KGB-II and KGB-Itf features
  • – All Metal Chassis
  • – Discrete Custom Designed Operational Amplifiers
  • – Milled Aluminum Knobs
  • – Phase Reverse Toggle Switches
  • – Cinemag Transformer Balanced Outputs
  • – XLR Gold Neutrik Output Connectors
  • – Switchcraft 1/4″ Phone Input Jacks
  • – 1% Metal Resistors
  • – Blue Led Power Indicator
  • – 4 Rubber Feet
  • – External 20-24VAC Power Supply (supplied US only)
  • – Input Gain Select Switches
  • – Phase Reverse Switches
  • – Ground Lift Switch

  • S/N: Better than 90db (shorted input)
  • Output: Transformer Balanced +4 @ 600 ohms
  • Power: 20-24VAC Rated, External
  • Gain: Low = 70db / High = 90db (2 kHz source @ .775V)
  • Gain: Low = 35db / High = 60db (2 kHz source @ .09mv)
  • Sensitivity: Lower than .09mv @ 2 kHz



If you are a professional producer, sound designer, engineer or are part of a commercial studio and wish to audition a product on-site in your studio, then you’re in the right place.

We specialize in hands on one-to-one demonstrations of pro audio equipment such as; monitors & outboard and also provide demonstrations for our range of boutique synthesizers and effects.

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Additional information

Weight 5 kg


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