This invention relates to novel adenoviruses useful in the production of
high titers of recombinant adeno-associated virus (rAAV) comprising a
foreign DNA insert and methods of making these adenoviruses. The
adenovirus comprises the AAV rep gene in which the p5 promoter is
replaced by a minimal promoter or by no promoter. The invention also
provides methods of producing high levels of rAAV as a substantially
homogenous preparation and composition of rAAV.