What is darkblue?



A valve (tube) based guitar preamplifier for stage/studio


    Unlock the secret tones of your guitar

    Feel the extra response from the strings

    Hear the harmonic sustain at low sound levels

    Enjoy the rich sounds and textures as never before

    See the cool design on stage or in your recording facility

    darkblue the ultimate sound reference for any guitar

    Designed by me and manufactured in Scotland




   For full specification please contact me directly




Dennis Marshall