Buttkicker DTM-KIT Drum Throne Rig: Heavy Duty Monitoring for Drummers and Seated Players Buttkicker Concert specs are 5 - 200 Hz Frequency Response. Nominal Impedance is 2 ohms. Buttkicker Concert: Power Handling is 400 watts minimum and 1500 watts maximum Amplifier Specs are: 1000 Watts @ 4 ohms and 1900 Watts @ 2 ohms Amplifier can power 1, 2, 3, or 4 ButtKicker LFE transducers with Class D switching technology Amplifier has variable high cutoff 40 - 160 Hz. Low cutoff, 25 Hz switchable. RCA and 1/4 inputs with 160m Volt and 1.25 Volt sensitivities. Either 120v or 240v versions. NOT SWITCHABLE Buttkicker Concert specs are 5 - 200 Hz Frequency Response. Nominal Impedance is 2 ohms. Buttkicker Concert: Power Handling is 400 watts minimum and 1500 watts maximum Amplifier Specs are: 1000 Watts @ 4 ohms and 1900 Watts @ 2 ohms Amplifier can power 1, 2, 3, or 4 ButtKicker LFE transducers with Class D switching technology Amplifier has variable high cutoff 40 - 160 Hz. Low cutoff, 25 Hz switchable. Amplifier has variable high cutoff 40 - 160 Hz. Low cutoff, 25 Hz switchable. RCA and 1/4" inputs with 160m Volt and 1.25 Volt sensitivities. Either 120v or 240v versions. NOT SWITCHABLE Amplifier has variable high cutoff 40 - 160 Hz. Low cutoff, 25 Hz switchable. RCA and 1/4" inputs with 160m Volt and 1.25 Volt sensitivities.