Ryszard, It is loud enough for a small club, as in Eagles, VFW, American Legion. In other words where they still let us old folks play. What I like is this, with the Harmony Singer's (magic button) so to speak, It sounds great as is. Band In Box is better than I have heard it before. The audience has no trouble hearing the HK Nano. You can add another Nano or another system if needed. Let me say this I can carry The complete HK Nano system and My Phil Jones Suitcase Compact Bass Amp in the trunk of the BMW Z3 and still have room for a mike and stand + a small gear bag. I repeat,27 lbs. I like it a lot.------Leon