1, scaffolding power amplifier has large battery, slow power consumption speed and high power consumption efficiency. The finished power amplifier has small battery, fast power consumption speed and low power consumption efficiency.

2. Scaffolding power amplifier is relatively cheap, the price is only 1000 yuan, which is very close to the people. The cost performance is very high, and the price of the finished power amplifier is relatively high, 2000 yuan each, and the cost performance is low.