LL1584-3FXNP2C is a transformer isolation unit for balanced-to-unbalanced conversion. The LL1584-3FXNP2C is typically used when connecting a balanced preamplifier to a power amplifier (with unbalanced ¼” jack input).

Transformer turns ratio 1:1
Connectors: XLR-F — 1/4″ male
Cable Length: 10 cm
Max Prim. Level. 1% dist, 50Hz: 17 dBU

Complete datasheet for LL1584-3FXNP2C