Pike Amplification Vulcan XL Bass PreampThe Vulcan XL is a complete bass preamplifier that packs discrete parallel drive circuits, a four band equalizer and a balanced XLR output into an integrated package. The signal path is split after the first gain stage and sent to each overdrive circuit where the sound is clipped and sculpted individually and selected via the color switch. After blending with the input signal through the mix control, the signal is routed through a versatile four band