A Designs KGB-II
The A Designs KGB-II and KGB-Itf are instrument preamplifiers that supply +4 dB line level balanced outputs. The KGB-II is a dual-mono (stereo) unit while the KGB-Itf is a single channel version with a useful three-band, high/mid/low, fixed frequency tone control with up to 12 dB of cut/boost.The KGB Series uses discrete op-amps with Cinemag output transformers and both have 22-meg-Ohm input impedances so that they will not load down passive pickups and change the intrinsic sound of your instrument. I found them to work great with guitars, bass guitars, and also electronic keyboards. The KGB-itf (pictured top), with its powerful tone stack, makes an awesome single-channel interface for guitar or bass. The A Designs KGB-II (pictured bottom) is a matched dual-channel interface perfect for stereo keyboards, synthesizers or stereo guitar rigs for either live stages or in the studio. The FOH engineer or recording engineer will love that both these units will directly drive any line level processor or DAW interface–there is no need to use any console channel strips if you prefer. Both have front panel Switchcraft 1/4-inch Input and thru jacks (to connect to stage/studio amps) plus rear-panel ground lifts, polarity/phase flip, and on/off power switches. They are both powered by included wall-wart power modules. A Designs KGB-II and KGB-Itf General Features: – 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 – 4 Rubber Feet- Heat Vents
 A Designs KGB-II Features:
– Two Discrete Inputs with Thru- Gain Select Switches for each channel – High/Low- Phase Reverse Switch for each channel – Gain Lift Switch- External Power Transformer for a very low Noise Floor A Designs KGB-II 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
