I just tested a brand new Logitech Z-2300 that was highly touted in this forum - couple weeks ago with about 50 people in a small clubhouse. All 50 people were singing along with a lead singer - a small church fellowship event.

I was quite disappointed with the result. I used a Behringer mixer with the following items going into the mixer:
1. PSR 3000
2. Yamaha electronic drumpads
3. 3 mics

The sound was distorted at even medium volume. Took out the drums, and it was still distorted.

I thought Logitech can handle much more than that. I heard from UD about headroom issue in the past - wonder if that was the cause here ?

Spoke with Guitar Center person and he mentioned that I need a mixer with compressor built in like what the Yamaha mixer offers. He also mentioned that I would need a pro amp like Behringer Ultratone which had many negative reviews.

Pls advise what is really going wrong ?

Could it be the cables causing distortion ?
When the lead singer by himself with nobody else singing and the keyboard in the background, it seeems ok.

Thanks for the advice