Hi, I use a Crate TV 100, a PA system that contains in a luggage like, 2 active 2 way speakers, a 8 channel stereo mixer with digital FX, micro, mixer & speakers stands GREAT sound STEREO for around $500.00, I also added a subwoofer M-audio(100 Watts) that I had, for small to medium jobs (up to 300)is great!.I play in "Tea dances" in the Phoenix Area, I also have a Roland CM 300)powered mixer that I use with 2 Yamaha 2 way Speakers (15 inch and a tweeter), and in fact, yesterday, I use both systems....and sounded great!! with my PSR3000 and my Korg PA60.