One TK-Audio NFST Eins audio power filter in a fantastic condition. It is the original 230 volts European version with one 8A and one 16A outlet. It has all the original upgrades like Elation 5 power cable, Oyaide P-079e connector, Furutech FI-E30 sockets and two AHP fuses. Serial number is 0756. Retail price is 549 euro. See picture of the original invoice with all the upgrades on it. Check our other listings for more interesting items. Free shipping worldwide!