Quality Would you consider this product to be made well? How dependable? i have had mine over 5or6 years now i have ran every kind of sound from my keyboard rig and never got it clipp yet i use two jbl 3way mrseries that have 18s for the bass drivers and the 1850hd works!! Features What do you consider to be the best features of this product? What features would you add to this product if you could? the best features for me and alot of live players is the imput and out put conections the only features i could add none that ican think of this amp is strong and it sounds fantastic cant beat that!!! Ease of Use How easy is this product to use? How easy is the product to use with other products? Did it take long for you to learn to use this product? Was the manual helpful? How playable do you consider this product to be? this amp is easy to set and use going live cant beat it the conections on the amp are easy to under stand Sound How is the tone? this amp to me is nothing less than high end audio Overall Your general opinion of this product. i think this may be the best amp on the market to day even if spend more money