what do you need an amplifier for
Power. Generally you should pick an amplifier that can deliver power equal to twice the speakerâs program/continuous power rating. This means that a speaker with a ânominal impedanceâ of 8 ohms and a program rating of 350 watts will require an amplifier that can produce 700 watts into an 8 ohm load.ower. Generally you should pick an amplifier that can deliver power equal to twice the speakerâs program/continuous power rating. This means that a speaker with a ânominal impedanceâ of 8 ohms and a program rating of 350 watts will require an amplifier that can produce 700 watts into an 8 ohm load.