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The supercardioid KU4 has the unmistakable characteristics of a smooth ribbon sound, yet it
is uniquely different. It is currently the only supercardioid ribbon microphone in commercial production. Like other ribbons, it’s lightly-tensioned, ultra low mass ribbon has a frequency response beyond 20 kHz, an accurate transient response, and no upper midrange resonances common to large condenser mics. The KU4’s suppressed rear lobe reduces the pickup of room ambiance and is especially useful when the rear of a figure-eight pattern would pick up undesirable sounds. The KU4’s reduced bass proximity effect facilitates closer miking, while its low-tuned ribbon does not exhibit bass distortion.