i must say, this is a fine amp, enough to fill a room with at least 100 people capacity... i have this back home. i still do. i was just thinking if it is wise for me to ship it all the way here in singapore. nonetheless, very fine amp indeed... it was able to hold the low b very well. it also handles the sound of my upright bass very well. i gigged with it and it never gave me any problem... yes, i gigged it with both the upright and the amp... i highly recommend it.