AMPS
The amplifier is very important because it is what creates the sound, so no matter how good your bass is, without a good amp it is just a stick.
Above are pictures of Les Claypools recording set up in his estate called Rancho relaxo. "COOOOL".This is just some big ass amp.This is a marshal Bass state 65 watt.
This is a crappy Roland Bass amp.
These are some Fender amps and a big sub woofer.
This is Les Claypool's on the road equiptment. He always makes sure he is in a double bed room so there is somewhere to put his gear.
This site below contains the best bass amps in the world