top of page

BJFe Emerald Green Distortion Machine 4K

hand wired by Bjorn Juhl (BJFe)


BJFe Emerald Green Distortion Machine 4K

  • BJFe Emerald Green Distortion Machine 4K (EGDM4K) - The EGDM 4K was specifically designed to create the compression of the top boost channels of the famous British combo tube amps. The emphasis is on the depth of distortion and the reproduction of the compression feel. It also reproduces the light "ducking" effect at high input levels, and also has a specific EQ curve that creates the characteristics of the sound. The sound of EGDM 4K is a dynamic overdrive-distortion with a brilliant top end. As you can see from the British Racing green color housing, it is the tone when the vintage class A tube amp made in England is top boosted. This pedal is ideal not only as an effect for creating that sound with a clean transistor amp or tube amp, but also for boosting an amp with a similar sound. The DIST knob adjusts the strength of the distortion and the appearance of sustain and harmonics. Please start the setting around 11 o'clock.The TREBLE and BASS knobs can control the high and low frequencies, respectively. You can use it as a booster by turning the DIST knob almost counterclockwise. Also, if you have multiple distortion pedals on your pedal board, connecting the EGDM at the beginning tends to give the EGDM and other drive pedals the best performance. The VOL knob adjusts the volume balance when the effect is ON / OFF. At first, set it around 12 o'clock, and then adjust the tone from there. The EGDM 4K has a high input impedance that matches the guitar pickup, and you can adjust the strength of distortion with the volume control of the guitar. The output is set for guitar amps, many effectors, and tape echoes.

    The EGDM 4K runs on a 9V battery or a standard 2.1mm barrel type center negative DC9V adapter. Current consumption is about 3mA (2mA when the effect is off). Battery life is about 36 hours. If the tone is muffled or the LED is dark, replace the batteries or check the connected adapter. 500K Pout 1kHz in 50k: app. 0uW35 RMS

    Max load: app. 10K Max output: 1V peak Max current consumption: 3mA at 10V Upper freq.-3dB: app. 10KHz Max gain at 1KHz : app. 60 dB Max inputsignal: 3V peak Suppl. Voltage range: 7V5-18V