The Ukraine striker was a deadline-day arrival from Anfield and is looking forward a second stint in Germany having plied his trade there for 12 years before moving to Merseyside in the summer of 2007.
"Hertha is a fine club with a young and very good team. It is a very, very exciting task ahead of me," he told Hertha's official website.
"The team has a lot of potential and good players like Arne Friedrich, Mark Pantelic or Joe Simunic to name but a few.
"Of course it is a brilliant league and the atmosphere is very special, but the difference between the Premier League and the Bundesliga is not huge."
Voronin might be missing out on Champions League football by leaving Liverpool, but the 29-year-old is still confident of a successful season in German capital.
He said: "Hertha are a young team with a lot of potential. Hertha is an ambitious club and I want to play a part in their goals.
"I think qualification for the UEFA Cup is a realistic target, and of course we want to progress as far as possible in this year's competition."