Mackie SRM150 Compact 150w Powered Portable Active Speaker Box. By combining Mackie's proven mixer technology with our equally renowned SRM speaker technology, we've created a powerful, compact, great-sounding PA system that is affordable, versatile and expandable. 

Featuring a 150W Class-D amplifier and 5.25" full-range neodymium driver, the SRM150 provides extremely high output performance, with fidelity that is far superior to anything else on the market. 

Features: 

• Extremely portable active loudspeaker system. 
• Built-in Mackie mixer for superior sound quality with: 3-channel mixer with 3-band active EQ. 
• 2 high-headroom Mackie Mic/line preamps with 48V phantom power. 
• Instrument-ready input (no DI required). 
• Dedicated stereo channel for keyboards, CD, MP3, iPods, etc. 
• Combo "line in" for linking or adding inputs. 
• XLR "thru" with mic/line switch for linking more SRM150s or direct send to main PA. 
• 150-watts of high output, Class-D power. 5.25" premium-quality, full-range neodymium driver. 
• Frequency Response: 100Hz to 17.5kHz.