RDL AV-HK1X HUM KILLER Audio Isolation Transformer with XLR Input and Output

Stop distracting hum and protect your audio chain with the Radio Design Labs AV-HK1X Hum Killer audio isolation transformer. Designed for professional security, surveillance and monitoring applications, this balanced mono isolation module removes ground-loop noise between a low-impedance source and a grounded amplifier or mixer. The AV-HK1X features XLR input and output jacks with gold-plated contacts and studio-quality galvanic isolation to ensure clean, reliable signal transfer without compromising RF immunity. Housed in a rugged, portable field case, the module is equally suited to rack-mounted systems, temporary installations, or field troubleshooting. By isolating the input shield from the output ground at audio frequencies, the unit protects sensitive gear and delivers clearer voice and line-level audio for recording, CCTV audio feeds, public address and other mission-critical monitoring systems. Made by Radio Design Labs in the US, the AV-HK1X provides a simple, low-cost solution to complex grounding problems. Add it to your security or AV toolkit to eliminate hum and improve intelligibility — order now or use it on-site for immediate noise mitigation.

• Eliminates ground-loop hum so security and surveillance audio remains clean and intelligible
• Galvanic isolation via studio-quality transformer protects connected equipment and prevents noise transfer
• XLR input and output with gold-plated contacts for reliable, pro-audio connections in monitoring systems
• Rugged portable field case lets you deploy the unit quickly for temporary or permanent installations
• Preserves RF immunity while breaking audio ground loops — ideal for sensitive security and AV networks