What brand of amplifier/amplifier is good?

< , - The following points should be taken into consideration when purchasing a loudspeaker:
, - , Most people choose a waist-mounted loudspeaker. Advantages: It is light and convenient. The speaker is attached to the waist and can be used with a microphone on the head. It is very simple. Disadvantages: Only head-mounted microphones can be used, not lavalier microphones. Because the speakers are small, the sound reproduction is poor, and the volume is low, it is only suitable for use in smaller classrooms. Why can't this kind of machine use a lavalier type? Many buyers request to switch to the lapel style. It’s not that manufacturers can’t do it. In fact, the cost of the lapel style is lower and eliminates the need for a headband. The main reason is that the distance between the microphone and the speaker is basically determined. If the microphone is a lavalier type, then it will be farther away from the mouth. At this time, the sound emitted by the speaker will be much softer. After forcibly turning up the volume, the sound emitted by the speaker will It will be transmitted to the microphone and amplified again. The amplified sound will be louder than the original sound, so it will be transmitted to the microphone again, and an amplification cycle will occur. As a result, the machine will roar. This is different when wearing a microphone with a headset. The microphone is far away from the mouth. Recently, the loudspeaker does not need to be turned very high to make a loud sound, so it will not whistle easily. When purchasing a waist-mounted loudspeaker, it is best to choose a rechargeable one. If the loudspeaker is used every day, it consumes a lot of electricity and needs to be replaced in a few days. One-time batteries are too expensive to use ordinary batteries. The price of non-rechargeable machines is lower. If you want to buy rechargeable batteries yourself, you can use them, but chargers that can save the battery at one time are not easy to buy on the market.
, - Requires a large volume and good sound quality. Advantages: large speakers, good sound reproducibility, large enough volume, and a battery installed in the main unit, which can also be used outdoors. It is also equipped with head-mounted and lavalier dual microphones, which can be freely selected. When in use, the transmitter is attached to the waist. Most TV presenters use this method. The host is placed at the back of the classroom or on one side of the podium, and the sound is transmitted wirelessly. Disadvantages are: they are relatively large, usually weighing around 1 kilogram, and are not as convenient to carry to class as small machines. Transmitters are usually not rechargeable, and you can buy rechargeable batteries and chargers if you need them.
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' ( ) < Winning Megaphone


' ( ) < New online loudspeaker


' ( ) < Aike loudspeaker


' ( ) < Yuepu Wireless Speaker


' ( ) < Aixue Speaker


' ( ) < Yaxuan loudspeaker


' ( ) < Dr. loudspeaker


' ( ) < Banghua loudspeaker


' ( ) < B loudspeaker


' ( ) < blue Sheng Amplifier


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