Bridgold 10pcs MJE3055T MJE3055 NPN Bipolar (BJT) Single Transistor,10 A/60V,is Designed for General Purpose of Amplifier andswitching Applications: Amazon.com: Industrial & Scientific
NTE Electronics 2N3415 Silicon NPN Transistor for General Purpose Amplifier, 500 mA, 25V (Pack of 5): Amazon.com: Industrial & Scientific
NTE Electronics NTE37 PNP Silicon Complementary Transistor, AF Power Amplifier, High Current Switch, 160V, 12 Amp: Amazon.com: Industrial & Scientific
30pcs,FJA4310F,J4310F NPN Triode,Transistor,Triodes,Transistors for Audio Power Amplifier: Amazon.com: Industrial & Scientific
Amazon.com: Power Amplifier Transistor Black High Power Audio Amplifier Transistor for Model 2SA1943 : Electronics