線材制作班（注意）

Hi Modi Sir,

As I'll also join KK's CDM-9 class, should I buy 1 roll instead of just 1-2 feets for the cables only?  Or for different audio components (CD, power amp, pre-amp, DAC, ...), we should use different types of 錫線?

BTW, what's the cost per roll for these 2 types?

Thanks,
Leon