1.teaching pa amplifier 2.power output:2*200W 3.DC 6V battery power,echo 4.ISO 9001,FCC,CE,Rohs 5.transistor:3035 ... .7.This product comes with 6V DC power supply.8.it uses toshiba transistor.with high power output.This fits your indoor activities. You ... of Toshiba. it is popular and affordable but very high power output, you can use with 2*100W speaker, 8ohm,8",10 ...