Hello, here you will find an original owner Shunyata Hydra Model 4 power conditioner with 4 independent audiophile grade receptacles. There is not a mark or scratch on the unit. It functions as new. There is nothing on the market that performs at this level for anywhere near my asking price. See the online reviews. The Shunyata Trident Defense System is the finest engineering available. Please let me know if you have any questions. Buyer responsible for shipping, insurance, Paypal and Audiogon selling fees. Thank you for looking.