The Triad Magnetics SP-21 is an audio transformer designed for high reliability applications. It features a 10k CT primary impedance and 2k CT secondary impedance.
The Triad Magnetics SP-69 is an audio coupling transformer with a 600/150 ohm impedance and a 50mW power level. It operates within a temperature range of -40°C to 85°C.
The Hammond Manufacturing 149U is an open-frame audio transformer designed for PC board mounting. It features a primary impedance of 150/600 Ohms and a secondary impedance of 8 Ohms.
