Build a High Power Amplifier Using 20 Transistors - MICRO BOOSTRAP with M-270 BOX

Published at : 23 Dec 2025

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Hi friends, in this video I try to make a high power amplifier. This amplifier consists of 2 channels (stereo). Each channel uses 5 pairs of end transistors (2SC5200 & 2SA1943).
In this assembly, I only used a 5A 47VAC transformer. But this amplifier can still be upgraded up to 10A 55VAC (if using the same box). The total budget for this amplifier is around $120.

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