Clear Sky X4 Speaker CableSold as a pair. Clear Sky X4 has been newly upgraded to offer a better resolution for a wider range of speakers. This entry level Cardas Clear Speaker cable uses braided Matched Propagation Conductors. Performance Based on its big brother, the Clear Cygnus speaker cable, the newly upgraded Clear Sky X4 now offers better resolution than the original Sky, and is more suitable for a wider range of speakers. Our new braided conductors allow reduced