The KRK S12.4 is a powerful and accurate subwoofer that perfectly compliments your studio monitors for an enhanced listening experience. The S12.4 builds on the legacy of KRKs sonic performance delivering tight accurate and extended bass response. The S12.4 is the ideal companion to accurately monitor your low end when mixing and mastering a host of different musical genres. A highly efficient class-D power amp dramatically increases transient response control and punch while working in unison with a 12-inch woofer and 2.5-inch voice coil to give the engineer artist and producer an extended frequency range from 23Hz - 130Hz with a maximum SPL rating of a tremendous 120dB. The KRK S12.4 pushes the envelope further by improving previous models by focusing on low-frequency extension down to 23Hz improving porting for a hugely improved low-frequency phase response and eliminating port noise and vibration redesigned baffles for a lower height profile and less depth allowing for easier placement and flexibility and more. Universally compatible with almost any audio source the KRK S12.4 has a wealth of connectivity options. No more will you need any adapters or specialised cabling the onboard RCA TRS and XLR inputs and outputs allow you to quickly and easily integrate the S12.4 into your existing monitoring setup.