I have 2 in my closet right as we speak... Under year old bought BN... Been strapped there whole lives @1ohm without issue.. Never seen below mid 13v range.. No blemishes to mention at all... Mate went with single amp setup and I bought nendos from him at mates rates. No need for them at all. Also, have a pair of Skar 2500's strapped whole life @2ohm. Solid voltage of course. Mint condition as well..