Bridgold 10pcs(5pcs 2SA1943+5pcs 2SC5200) PNP NPN High Power Matched Audio Transistor Silicon Precision,3-Pin.: Amazon.com: Industrial & Scientific
10pairs=20pcs/lot New 2sc5200 And 2sa1943 Transistor Power Mosfet A1943 (10pcs*10pcs) Audio Amplifier Boost Tube New Original - Connectors - AliExpress