SKY Audio Singapore 28 Sin Ming Lane, #05-137 Midview City, Singapore 573972
Crystal 3.1 & Crystal 6.1​​
​​Crystal 3.1 & Crystal 6.1 both has the same unique connection function.  Having its inlet unified to the international standard: IEC60320 C14, and can be connected and expanded with other Crystal series (Crystal 3P / C1P, etc.) equipped with a connecting inlet plug (IEC60320 C13). Although both body size and weight have been changed, it is possible to connect with the Force bar series (Force bar3P / S1P, etc.) * 1.In addition, when connecting to the Crystal series equipped with a connecting inlet plug, a dedicated connecting plate * 2 is prepared to improve the coupling, and it can be firmly fixed by firmly holding down the rattling and rattling of the fitting part.
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The Crystal series will continue to introduce a wide variety of power strips by function, making it possible to build a highly expandable power strip system that matches individual audio systems. 
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Crystal E
Crystal E comes with a 1.2m dedicated ground cable.  One is the "RCA plug-Y terminal" cable. The other is a "Y terminal-Y terminal" cable.
As with the conventional product, a coaxial cable with excellent high-frequency characteristics is used for the wire. All terminals have been changed to gold-plated products in consideration of high sound quality.
The "RCA plug-Y terminal" cable can be effectively used when there is space in one of the analog input / output terminals such as an amplifier.
The "Y terminal-Y terminal" cable can be used when there is no space in the analog input / output terminals as described above, or when there are housing tightening screws and GND terminals.

Confirmed further improvement in sound quality compared to Force bar EP.
As with Force bar EP, the basic effect is to improve the S / N, but for those who enjoy music and listen to it, the "delicious band (mid / mid-low range)" that reaches the heart most, is full and rich. On the other hand, you can see the effects such as the reproduction of fine sound by improving the S / N and the deep carving and clear outline. The sound stretches and gloss is good, and the orchestra with a sense of scale, or the dynamic JAZZ, rock, POP, etc. will be handled smoothly.