unlike the stone machine, the gallbladder machine is different from the stone machine in terms of sound quality: 1. The gallbladder machine has a loud and powerful voice, a high and full voice and a small distortion rate. The reserve power is large, and the bass high-power speaker can be pushed to reach the peak without any effort. 2. The stone machine (amplifier) has a frequency division processing for audio, so the sound level is obvious, and the sense of rhythm is strong, but the distortion rate is high. Due to the limitation of amplification ability, the treble can't go up when it is high, and it can't go down when it is low. As people often say, boring. Therefore, the nominal power on the nameplate of the stone machine is very large, but the actual rated power is not large. This is why the nameplate of the stone machine is nominally hundreds of watts or even kilowatts, which means the peak power, but the actual power is only tens of watts. On the other hand, it is a personal hobby. Some people like courage machines, while others like stone machines. Playing the same song with stone machines and courage machines has its own advantages and disadvantages, but everyone enjoys it from different angles.