Why magnesium? 

SIN-KAI MS227C Speaker cable ,3m pair with Y connectors, ex demo condition .

Adopts an extremely thick φ0.7mm x 6-strand PC-Triple C conductor to minimize transmission between conductor wires and reduce strand distortion. A stranded wire structure with advantages similar to those of a single wire conductor. Maintains conductive performance by increasing the diameter of the copper wire.
Adopts PC-Triple C conductor φ0.3mm x 6 twisted configuration By inheriting the conductor structure of "MS227C", it reproduces high sound quality with a sense of realism despite being a thin conductor. In addition, the cable has a twisted pair structure that is resistant to external noise.
Magnesium wire is used as the conductor core , Magnesium is a material with a high vibration absorption effect and is used in various fields to suppress vibration. This is a speaker cable with a new concept based on the concept of directly absorbing vibrations transmitted to the conductor part by installing 99.95% pure magnesium wire as the core material of the conductor, which has a particularly high vibration damping effect. A high damping effect can be expected with a magnesium cross-sectional area ratio of approximately 15%, and the balance with conductive performance is considered.
 

Weight savingIt is 1/5 the weight of copper wire.
Specific gravity (g/cm3): Pure magnesium…1.7 Copper…8.8
vibration absorptionAbsorbs vibrations with an extremely high damping capacity among practical metals.
Electromagnetic shieldingIt has high electromagnetic shielding properties over a wide frequency band.
heat dissipationIt is a material that heats up easily and cools down easily, and has a high heat dissipation effect.

My opinion with 25 years of experience in hi-fi and tested one - two hundred cables. When I say tested, I mean that the cable was in at least three systems, mostly compared to much more expensive cables than it. And in most cases, it happens that every cable lacks something, at least one thing in the sound, or one little complaint, regardless of the price. This cable is a completely new concept of speaker cable in the hi-fi world. Made of high-purity magnesium, it gives an exceptional sound and a new dimension of listening to music. Really great cabal for not much money, you won't regret it, on the contrary.  
 
I have been dealing with hi-fi for more than 25 years and and I'll say it without modesty, I have a huge experience, especially with cables.
If you have any questions, I'm here.
Thanks and check out my other cables and gear.