Do I need to turn off the amplifier in the clock when there is no incoming signal?

Question

Electronics

In the clock I want to put an amplifier with output to the speakers. A bluetooth module will be connected to it (like bluetooth speakers and mp3 from a memory card). Everything will be controlled by Arduino. The module can be turned on with the buttons and in accordance with the alarm settings. Do I need to turn off the amplifier when the source is not turned on or let it work all the time? If disabled, how?

Answer 1

Check if the leg amplifier has "HOLD" or SLEEP or Stand-by.
In general, modern amplifiers (you don’t have class A, right?) consume almost nothing without load, but for a wearable device this “almost” can be fatal. Read the datasheet on the amplifier, there is definitely an item "consumption in idle time"