So far, we do not really dealt with bass guitar  effects, amplifiers. Here, in this time of change! One of my favorite band The Beatles, inspired a new tube bass preamp creation. The plates can hear great tunes and sounds of the XXI century it is significant. This’ 60s-edge tone you want to give a little back. This simple, little preamplifier may be able to create a good bass sound. The idea Okay, what do we need? First, a simple tube preamp and a tone sections. And yet… put a little extra! Whether it is a switch which can give more…