Radial Engineering Highline Passive Line Guitar Amp Isolator

Amp simulators are more popular than ever, but they present a unique set of problems for guitar and bass players who want to interface them with a PA system. While amp sims can produce line-level outputs, they often have ¼" unbalanced connectors that aren't designed for long cable runs, and they encounter hum and buzz from ground loops when connected directly to the PA.

The Radial Highline is a line isolator ideal for players who utilize amp simulators on their pedalboard. The Highline features premium Jensen 1:1 transformers that retain the full volume from the amp sim while providing isolation that breaks up ground loops and protects against phantom power, along with a balanced output that can be run over long distances without signal degradation.

The Radial Highline is a premium line isolator designed specifically for amp simulators and pedalboards. Featuring a Jensen transformer, the Highline retains the full output of your gear while delivering clean, balanced signals free from hum and interference. With Radial’s renowned build quality, the Highline is built for long-term reliability on stage or in the studio. A 1⁄4” Thru jack provides flexible connectivity for stage amps or stereo sources, and the sum function allows effortless mono blending for streamlined setups.