Power Amplifier OCL 70 watts using IC-741, 2N3055 And cheap when compared to other speakers, the as same volume level. Because it is designed simple, It can be easily created in your friends, An electronics rookie. This 50W OCL main amplifier circuit has high quality,economical and also easy to build too. Will believe that this is not as exaggerated statement more than true.ĥ0W OCL main amplifier using LF351-2N3055-MJ2955 with PCB If you experimental build or ask people who try already built. This circuit is one that stands out for ages over 40 years, with sound quality that is hard to find compared be other circuits. The output power is 30 watts RMS, using all transistors. But I often recommend this project 2N3055 amplifier circuit. If you want to create the integrated power amplifier project for the first time.In addition, we will use ICs because It’s convenient and modern. We recommended the 2N3055 power amplifiers circuit with PCB list below! It is popular forever, very cheap, easy to find, easy to use. Although it is the very ancient transistors, but it still have a lot of classic and very good sound. We like a 2N3055 Power Amplifier Circuit. The detail is other see in the circuit and model PCB next. This durability do not make a loudspeaker a lose easy. Then have a voice good another thing you will like that amplifier. When, be amp OTL you then are certain that build easy use power supply the group is one 70V sizes by must use Current low 2Amp go up. Follow very circuit keeps to are Class ab then have a voice good loud. This be power amp OTL 50Watt use IC LM3900 and 2N3055 x 3pcs transistors to pillar equipment.