Velleman-2-Channel-Loudspeaker-Protection-Kit-Velleman-K4700-2-Channel-loudspeaker-protection-kit-2-channel-this-stereo-speaker-protection-prevents-switch-on-clicks-&-DC-components-on-the-output-of-the-amplifier-connected-6sec-switch-delay-200 Vpp-input-10A-switching-current-220V-AC-supply-suitable-for-audio-HIFI-applications-Velleman-K4700-2ch-Loudspeaker-Protection-Kit