The Kramer TR‑1 is a passive video isolation transformer designed for composite video signals. It provides complete galvanic isolation between devices to eliminate hum, ground loops and DC­offsets that can degrade picture quality. It is compact, rack‑mountable, and requires no power. Key Features: Input: one composite video signal 1Vpp/75ohm on a BNC connector; Output: one composite video 1Vpp/75ohm on a BNC connector. Bandwidth up to 5.8MHz (‑3dB), insertion loss of 0.8dB. Excellent signal fidelity: differential gain 0.05%, differential phase 0.05°, S/N ratio 73.4dB. Passive construction—no power required—and compact size in the Kramer TOOLS format for space‑efficient installation.