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While attending the Physics & Avionics class at Singapore Polytechnic from 1972 to 1973, I'd assembled this audio amplifier as a practical project. It had cost me more than my pocket-money as a student to buy those electronic components -- that tiny piece of linear integrated circuit with a heatsink at the center had cost me $8.90 alone, together with a few dollars spent on those capacitors, resistors, input/output jacks, and circuit board, not counting my bus-fares spent to shop for those stuff. Fortunately, those blue and yellow wires were free, ripped off from an old military aircraft to recycle. Collect this item at Yew Tee mrt station because packing and sending it by post is costly.
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