The Radial J‑ISO Stereo is a passive line‑level isolator designed to take a professional +4 dB balanced output—like the signal coming from a mixer or audio interface—and convert it cleanly to an unbalanced ‑10 dB consumer‑level signal for devices such as recorders, computers, or media players. It uses high‑quality Jensen transformers to provide clean signal transfer, eliminate hum and buzz from ground loops, and block stray DC that can cause noise or damage.  A recessed “set‑and‑forget” level trim helps prevent overload when feeding sensitive inputs, while multiple output formats (¼‑inch, RCA, and 3.5 mm) make it easy to connect to almost any consumer device. The J‑ISO is built in a heavy 14‑gauge steel housing with Radial’s protective bookend design, giving it excellent durability and shielding for use in studios, live venues, and mobile recording setups.‍