Dance square dance with how much power is suitable for charging amplifier

At present, most of the amplifiers used for morning exercise in the square can be charged and connected to the mp3, the specific price depends on the brand and machine power size, how many functions. Prices from more than 100 yuan to more than 1,000 yuan are. Domestic market preferred brand for the Bonhomme electronic Bonhomme brand, high quality and low price, after-sales service is guaranteed, (the purchase must see whether it is a genuine "Bonhomme" brand, and must be purchased to the regular professional electronic appliances market, must not be greedy for cheap and convenient to the irregular company to buy; regular agents and regular dealers will not be located in residential areas and office buildings. The regular agents and regular dealers will never set up shop in residential areas and office buildings. Welcome to visit the official website of Shanghai:/