LL1688 is an output transformer, designed primarily for 845 tube amplifiers, but the LL1688 is available with different core air-gaps for different types of output stages
The transformers are highly sectioned with harmonically sized sections, which results in a minimum leakage inductance. This, combined with a low capacitance coil winding technique results in a wide frequency range.
The primary winding can be tapped for 33% UL connection.
The transformers have a special audio C-core of our own production.
The transformers are unpotted, open frame type suitable for mounting inside an amplifier housing.