If you are looking for a 100-watt amplifier, For the job a small PA system, The news spread in the village or the sound system for the conference. I recommend this circuit, Because sound is very loud. When compared to other circuits at power are equal and very durable. because As Amp OTL do not eat your very expensive speakers certainly. But the speaker may sound a little annoying in the only turn it on. In addition, also use parts number little , easily constructed, without any adjustment. and It’s not hard to find and buy this equipment or to use the equipment replaced easily. because we use all transistors. How it works Read about the advantages it so much. Let’s see the details on this circuit. Of the circuit to see that we use the first pair differential transistor is No.MPS9682, the pre drives section is the Q3 we [...]

read more: Power Amplifier OTL 100W by transistor MJ15003+MJ15004 (with PCB)