Below you find a list of all our tube amplifier output transformers (OPTs), sorted by primary impedance.
All OPTs are built in our dual coil single C-core style and can be assembled with a huge range of core airgaps for Push-Pull or Single-Ended applications. As you can see, most of our OPTs can be configured for different primary and secondary impedances.
The use of C-cores with well defined airgaps results in an almost constant inductance throughout the whole operating voltage range. For SE transformers, the primary inductance variation due to signal level is less than 7%.