I use 1 cabinet underneath my keyboard to fill the room with sound. I also use a 5" monitor to provide stereo balance. RCF makes a great product. I believe they are the biggest speaker company in Europe, a heavyweight. Look at their website and all the technology they have (https://www.rcf.it/). The sound is crystal clear and the bass is warm when I use a Rhodes emulation such as the one in Keyscape (also highly recommended). Especially strong with other electric piano plugins involving MKS-20, MK-80, CP-70, DX7, JD-800, Celeste, Pianet, Wurlitzer instruments. Use a 5" with it if you are doing acoustic pianos.