How many amps does a 12v radio draw?
A typical stereo head unit will need about 5 amps of power.
How many amps does it take to run a CB radio?
The power supply should have an output between 12 to 14 volts DC. The power supply must be rated at 3 amps or more. You will also need a CB base station antenna.
How many amps does a home stereo use?
Home Electronics — For a typical TV and audio set up, 15 amps would be fine, but if you have some high load accessories, a 20 amp model may be needed (20 amp receptacle/wiring required).