Here I will share about the arrangement of components in the box. That where the components are a series of audio amplifiers that use relatively large components, which consume a lot of places in the box to the amplifier. But in this post I just gave inspiration only in the arrangement, or design place for neat, clean and have good audio output as well. please see image below. Description 1.AC 220V terminal 2.Switch on/off 3.Transformer 4.Diode 5.Capacitor elco 6.PCB kit amplifier 7.Heatsink 8.Master Volume 9.Terminal input output. Then this is the image of the booster amplifier using 2 sets of Sanken 2SC2922 and 2SA1216 transistors, which has a high output power.