The TRIAD MAGNETICS part SP-66 is an audio transformer designed to provide excellent performance in audio applications. With a 1:1 turns ratio and a maximum voltage rating of 1000Vrms, this transformer ensures accurate signal transfer and high-quality audio reproduction. The primary coil has a resistance of 1KOhm, while the secondary coil has a resistance of 1.3KOhm. Featuring 6 terminals and PC pin thru-hole mounting, this transformer offers convenient and secure installation. Whether used in professional sound systems or home audio setups, the SP-66 delivers reliable and crystal-clear sound output.