Acoustic Zen

just bought an expensive Acoustic Zen Ultimate Silver XLR cable on Audiogon - first time with this make, and last time too - either it's a fake (very light and seems empty inside sleeves) or it's the worst cable ever!!! my little Benckmark XLR does about 100 times better, or i could even say 1000 times better, as the Acoustic Zen doesn't do at all !!!
anyone experience the same thing - i should maybe send cable to headoffice to check authenticity.
thanks