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Here you will read how you can choose a mixer amp (also know as a powered mixer), what they do, how they might be used and how to buy one.

You can think of a mixer amp either as a mixer with built in amp(s) or as a power amp with built-in mixer and indeed the designs for these pieces of equipment usually look obviously like one or other of those two concepts. Two of the biggest factors to consider when choosing between mixer-amps are the number of channels the mixer has and the wattage of the power amp provided. Other factors which also influence choices include additional mixer features such as effects and EQ’s.

The mixer channels determine how many audio signals the equipment can simultaneously mix. Different channels are also different with not all channels having microphone input and some channels can be stereo (although two mono channels can be used to mix one stereo signal). So to make your choice of powered mixer (mixer amp) you need to consider how many microphones, instruments and stereo signals you might need to mix It is a good idea to get a few more channels that you think you need, for unexpected changes.

The power amp’s wattage needs to be carefully matched with that of the speakers it will be used with. Both too much power and too little power (when used over its safe operating range) can cause damage to both speakers and amps. When thinking about the wattage needed, consider the space the sound needs to fill and how loud it needs to be. Also bear in mind that if the system is used outside at least twice the wattage is needed to produce similar sound volume. The type of sound amplified also needs to be considered as sounds with more bass energy need speakers which can handle those frequencies as well as more wattage to produce similar sound volumes at lower bass levels. For example if the system is only going to be used for vocals and acoustic guitar then much less bass handling is needed than if the band includes bass guitar of keyboards.

Once you know how many channels and how much power you need, you can compare suitable mixer amps while considering what additional features some might offer, as well as quality and the character of the sound (different mixers sound a bit different, and the sound is usually similar to the character of how they look).

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