12" low frequency woofer. 1" new generation compressionn driver coupled with 90 x 75 polynominal horn design. switchable mic/line output. Balanced XLR input and output connectors. Switchable equalisation cells for music or voice. Bi-amplified monolithic high efficiency power amplifiers. Level control. Hand grasp. Internal insert for optional speaker stand. Internal m10 threaded inserts for optional mounting hardware. Protective loudspeaker grill. Road tough construction and lightweight portability. Minimize