When I received the item and tried it out there was a constant buzzing ,I thought there was something loose in the cabinet or the speaker was blown, so I returned it and ordered a replacement, when that arrived I opened the box and when I lifted the amp out of the box and the speaker grill and speaker fell off the front of the amp and there were screws laying in the bottom of the plastic bag that covered the amp

The speaker rattles so bad.. and the sound cuts in and out

So again the speaker flutter and vibration due to the terrible design and cheap materials in manufacturing kill this all in one set up from any pro sounding gigs