Superior Electro-Voice sound quality coupled with the most complete feature set in its class – the perfect combination of performance and flexible functionality, in a very compact package
The EVOLVE 30M is designed to deliver a significant step up in all-around performance for a column system in its size/price category. It includes an eight-channel digital mixer, studio-quality onboard effects, and remote control of all audio, effects and mix functions via the next-generation Electro-Voice QuickSmart Mobile application 
Frequency response (-3 dB)1 : 51 Hz to 20 KHz
Frequency range (-10 dB)1 : 45 Hz to 20 KHz
Maximum SPL2 : 123 dB