RDL AV-HK1 HUM KILLER Stereo Audio Isolation Transformer with Dual RCA Inputs and Outputs

Get clean, dependable audio where it matters most — the Radio Design Labs AV-HK1 “HUM KILLER” stereo audio isolation transformer removes hum and ground-loop noise from unbalanced, high-impedance audio sources so your security, surveillance and monitoring recordings stay intelligible and professional. This audio isolation module features dual RCA (phono) inputs and outputs with gold-plated connectors and includes two adapter cables for quick hookup to mini-plug devices like laptops, recorders or consumer players. Each input shield is electrically isolated to stop noise at the source while outputs tie to chassis ground for safe connection to grounded amplifiers and mixers. Housed in a rugged, portable case with a bracket mount, the AV-HK1 is built for both field use and permanent installations and operates across common temperature ranges. US-made and backed by a 3-year limited warranty, it’s an ideal choice for integrators and AV technicians who need reliable, low-voltage audio isolation for CCTV audio, access control monitoring, broadcast feeds and conference systems. Improve audio clarity in your next project — add the AV-HK1 to your toolkit or contact sales for bulk orders.

• Eliminates hum and ground loops for cleaner audio in security, surveillance and monitoring systems
• Plug-and-play dual RCA inputs/outputs with included mini-plug adapters for fast integration with consumer devices
• Gold-plated phono jacks and rugged portable case ensure reliable connections and field-ready durability
• Galvanic isolation protects sensitive mixers and amplifiers from noise and unwanted interference
• Compact bracket-mount design and 3-year warranty provide flexible, long-term installation confidence