http://www.musical-instruments-for-all.com/246342/seismic-audio-ma/seismic-audio-magnitude3600-2-channel-power-amplifier-1200-watts-rms.html YEARLY 2016-11-01 1 http://www.musical-instruments-for-all.com/183391/seismic-audio-ma/seismic-audio-magnitude3600-2-channel-power-amplifier-1200-watts-rms.html YEARLY 2016-10-07 1