8-pole male cable connector, black metal housing, chuck-type strain relief, ¼-inch flat tabs. This connector is accepted in audio equipment designed to IEC 62368-1 due to its component certification according to the IEC 61984 standard. speakON's STXX series was specially designed for heavy-duty speaker and amplifier applications such as professional touring. Extremely strong and durable, the STXX series features an all-metal housing.