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發表於 2014-4-10 07:27:05
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lomei 發表於 2014-4-9 10:40
入面好精密喎
Pretty good parts in general, high precision. Nice circuit layout, just wonder why most audio equipment don't use metal caps as hi end computer motherboards, maybe due to cost. Electrolytic caps have limited life, but low cost to make. Notice pre-cut traces on top of caps? Those help to prevent possible explosions like fire-crackers. Think of boiling oil in a sealed can, get the picture? If you don't use them, they get dried up. Either way, don't last. Metal caps are expensive and only upto certain uf but last so many years. The tubes are Eletro Hamonix and made in Russia. These are low price tubes and low quality. I would replace them immediately if I own this head-amp.. just my 2 cents. |
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