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Radial Engineering Highline & Highline Stereo | NAMM 2025

Naw, this ain’t a DI. It’s Radial’s NAMM-fresh Highline passive line isolator, which comes in mono ($179 street) and stereo ($249), and uses premium Jensen transformers to preserve your signal’s pure sound. The Highline takes 1/4" cable (with XLR outs) for connecting amp simulators or pedals to your amps or a DAW. It’s compact and pedalboard friendly, and the Mono version sums stereo sources down to mono. The Stereo can take four 1/4 ” inputs and deliver a stereo signal, but it can also sum stereo sources down to mono. And it fits snugly under a pedalboard.