We use musical IC UM66, UM3456, M3481 etc for many applications like for door bell, as an indicator for reversing car, for vehicle turning indicator, burglar alarms, intruder alarm and many more. Sometime it happen that sound from the IC is very slow and you are not able to hear it properly because of various kind of noise around your home or offices. Therefore to amplify sound signal you can use this simple amplifier circuit. This will amplify the musical sound so that you can hear it properly and from distance also.
Fig. 1: Prototype of Amplifier for Musical IC Circuit on Breadboard
In this amplifier circuit we have amplify the musical sound of UM66 IC you can use any other IC also. And to amplify the sound signals we have used a LM358 IC . LM386 is a very popular and widely use 8 pin audio amplifiers used to amplify sound signals.