Whirlwind ISO2 Dual-Channel Transformer Line Isolator and Balancer

The Whirlwind ISO2 is built for audio engineers and broadcast technicians who need reliable ground loop elimination and signal balancing without introducing active electronics into the signal path. Its passive transformer design makes it a dependable choice for any application where power-related interference must be removed before a signal reaches its destination.

In live production and broadcast environments, the ISO2 is commonly deployed between console outputs and press or video feeds, where mismatched grounds between venue power and outside broadcast trucks create persistent hum and buzz. It is equally effective on stage, inserted between keyboard or synthesizer outputs and power amplifiers to convert unbalanced signals to balanced without the noise floor penalties of active solutions.

Where active direct boxes or line drivers require batteries or phantom power, the ISO2 operates entirely without power, eliminating failure points in critical signal chains. The two-channel configuration handles stereo sources or two independent mono feeds from a single unit, making it a compact solution for multi-feed distribution in tight rack or stage-box environments.