The L E N Video Isolation Transformer acts as BOTH a Hum Eliminator AND a Ground Isolator whilst also improving on the performance of the traditional individual products.
The VIT01 will remove severe interference caused by 50 or 60 Hz hum whilst a normal "Humbucker" will only remove moderate interference.
At the same time it acts as a Ground Isolator eliminating ground potential differences between equipment with a minimal phase and gain distortion.
NOTE: See model VHE-100 Video Hum Eliminator if you do not want to block DC signals.