The guitar amp is used to emphasize the tone of the guitar. There are times when the tone should be significantly improved so that it can still be heard with all of the other instruments that are being played. The bass amp is meant to enhance the bass response of the bass guitar.
This can also work for tone control but only for bass guitars. There are a lot of bands who make use of these amplifiers to ensure that their songs will still be heard even if they have to play in a rather large venue. Some would use it to improve their performance. The sound will surely make a lot of difference.
Guitar amps modify the tone by accentuating or de-emphasizing the frequency of sound waves and infusing the electronic effects. Bass amplifiers produce a bass response and tone controls the stylist bass guitars. The high-end model bass amps include limited compressor features to keep the distorting of the amps at high volume levels.
Bass amplifiers get heated up fast; hence, external metal heat sinks or fans are placed to keep the amplifier fresh. A guitar amp is intended to create musical signals of a guitar louder. A loudspeaker will transport the sound, which also helps in adjusting the tone by spotlighting the frequency of sound waves and saturating them with electronic effects.