On pair, Type: 15066 peerless audio transformers used in single ended transistor audio amplifier, good for up to 50 crystal clear full bandwidth Audiophile watts when used in a para-feed design or 6 watts each when used with a standard hookup. Transformers are in excellent condition. Price is for two. More than one set available, take your pick. These are (high quality) parts only, to be used in your design. Peerless is known for full band width, Check specs! This is as big as these type of transformers get, (The Type1567 which is larger, is an auto transformer, not the same thing as this!.) Used to drive studio monitors. If ad is up item is for sale. email through craigs list.