AC Series XLR Connectors Amphenol Audio AC Series A and B Type XLR Connectors are specially designed to meet the needs of OEM products. These chassis-mount connectors offer a compact shell design that provides significant space savings over the traditional 'D' type shells. Gold-plated contacts improve performance, ensuring a reliable contact, while the unique grounding link options offer design flexibility. Amphenol Audio AC Series A and B Type XLR Connectors are available in vertical and horizontal PCB versions as well as latching and non-latching versions.