Yamaha pays more attention to sound, which you can see from the keyboard of the art program band on TV, but it is difficult to buy products with good sound quality below 3,000 yuan. If you add a power amplifier, 3000 yuan will be even more. If you don't care about the appearance of the product, it is recommended to buy it second-hand. The wear and tear of speakers is small compared with other electrical appliances, but second-hand speakers are often better than new ones because they are fully cooked. Speakers are subjective, so you need to listen on the spot, compare more and choose the one that suits your listening habits. If you plan to buy second-hand, be sure to distinguish carefully. In addition to the appearance, we should pay more attention to the details to see if the screws have been used. If so, it is likely that something has been changed. Try not to buy this kind of thing. Finally, I need to remind you that no matter what brand or model, it is best to listen to the receipt, and listening is the most important thing.