DIY Power Amplifier Project 600W BTL + Tone Subwoofer

This DIY project making the circuit about power amplifier or high power amplifier by using final transistor Sanken A1216 / C2922, with power amplifier construction BTL, bridge stereo to mono amplifier it has output power amplifier about 600 Watt RMS. This power amplifier I make complete with tone control + Subwoofer filter 4558 and with music mp3 player. See below step by step making this