The Bose Compact has a power handling of 130 watts (peak)..putting it in the 65 watts RMS area..

The Compact has an overall volume output advantage over the BA330..The BA330 is 30 watts...with a 109 db...The Compact has a 106db...

We did another side by side test tonight...and the Compact has a substantial edge in the bass response (8 inch speaker)..and top volume too..
The BA330 has a big advantage in the mids range and overall sound quality..

When pushed in a test tonight using Gary's gear...there seemed to be a limiter kicking in on the BA330...as Gary says "squashing" the bass tone and overall too..This was noticeable on Gary's stuff..but I was unable to duplicate it with my gear in my studio..I don't know why...

The Bose Compact seemed to handle the overdriven input by distorting instead of the "Squashing" method of the BA330..

The Compact seems to reach a higher volume level before it distorts...compared to the volume level of the BA330 before the limiter kicks in..

Both systems are more than enough to handle the 100 people gigs...Neither is suitable for DJ gigs where the big bottom ..higher volume levels are needed..

Use either unit within it's proper range..and they will serve you well..