I had a cheap generic speaker in it the high end was harsh, with little bass. I put a Celestion Eight15 in it today, it's much better. Now the top end is nice and smooth. It still doesn't have a lot of bass, but it is an 8" spkr after all. A little more than before. A really nice upgrade for the $40 I paid for the spkr new. This amp is seeing more gigs lately due to the trend of lower volume in clubs around here. At one time I would never have used it on a gig with drums, but as I explained in another thread, I took it to a gig with drums recently and was told it was "way too loud"