US plug. WattLock terminals – Heavy duty wire capture box. Accepts 8 to 14 awg wire. Accepts 19mm cable diameter. 2.5mm Hex socket hardware. All Polycarbonate design. All non-magnetic materials. High spring rate brass contacts. 15A/125VAC
The QED speaker cable story began in 1973, with the launch of the world’s first specialist speaker cables, QED 42 and 79 strand, now household names in the audio industry. Building on this longstanding British speaker cable heritage, QED embarked on an exhaustive research program into cable parameters which began in 1995 and continues into 2017 with the release of “The Sound of Science”, a 40 page White Paper distilling the research published since 1973 by QED.