Usually 3-5 Days. 45 Day Lowest Price - 100% Satisfaction Guarantee. Stereo imaging is pinpoint accurate thanks to the computer optimized designs of the crossover and drivers, and the M2 is capable of SPLs of up to 125dB at 1.25m as a stand alone system. When combined with a pair of Dynaudio Acoustics subwoofers, the system becomes a full 4 way main monitoring system capable of very high SPLs with a full frequency response down to below 35Hz. Recommended amp 250W to 600W, sold in pairs