Yamaha portable aluminium timpaniYamaha have researched extensively to find out the optimum bowl dimensions and bowl edge angles for kettle drums. The resulting TP 3300 range has a vastly improved sound quality compared to older models. They have the same shape bowls as some of the top range Yamaha models, as well as renaissance heads and hoops, all which help to create a deep, sustained tone. The TP 3300 range are incredibly easy to transport. They have retractable legs and pedals