SPEAKER: 2x8" TWEETER: piezo BASS PORT: rear IMPEDANCE: 8 ohms SENSITIVITY: 99 dB SPL SPEAKER POWER HANDLING: 250W RMS (AES Standard) AMP OUTPUT POWER: 250W RMS @ 4 ohms / 150W RMS @ 8 ohms FREQUENCY RESPONSE: 53 Hz to 18 kHz CROSSOVER FREQUENCY: 3.5 kHz WEIGHT: 27.56 lbs / 12.5 Kg WIDTH: 10.04 in. / 25.5 cm HEIGHT: 19.29 in. / 49 cm DEPTH: 15.16 in. / 38.5 cm OTHER: AUX IN HEADPHONES OUT XLR Line Out SPEAKER ON/OFF POWER REQUIREMENT: 100/120V; 230V; 240V 50/60Hz (Voltage is factory preset according to region of sale)Markbass amps/combos are manufactured to be sold and used in the country of purchase, and they are factory preset to that country’s voltage. Due to homologation issues, the voltage may not be changed. Product specifications are subject to change without notice.