Oyaide 100g Acoustic Solder SS-47

---------------------------------------------------------------------- ●We have always strived to improve quality by selecting the best materials ●Solder exclusively for audio “SS-47” is no exception ●We first started by selecting tin as the base ●We have experienced that sound quality is related to the purity of the material ●Ordinary solder is costly From the surface, the purity of tin is approximately 99.9% (3N)●"SS-47" further improves the purity and eliminates impurities to the utmost, using high purity tin of over 99.993% (4N)●Additionally, it contains silver and copper for the purpose of improving conductivity and preventing solder from being eaten away●In addition, when using normal alloy solder In most cases, the blending ratio of silver is 3 to 3.5%, but "SS-47" has a generous amount of 4.7%. ●Additionally, 1.7% copper, which has the second highest conductivity among metals after silver, is added. ●With this blending ratio, the conductivity improves dramatically, and we were able to set the eutectic point at 217 degrees. ● Of course, these combinations The ratio was not determined solely based on numerical data and workability.●We believe that sound quality should be given top priority in order to be labeled as audio solder.●We conducted numerous hearing tests on prototype models with various compounding ratios to realize the "elimination of individuality."●And...