Thank you for your feedback - I am pleased to read you enjoyed our Venice tours, especially the Doges Palace tour and the Canal tour. The contents of each tour usually don't overlap, on the walking tours we provide the headsets so that you can hear the guide better. At the begining of each walking tour we do sound check - did you ask for assistance with your headset to hear the guide better? I understand that overall you are satisfied with the experience? Thank you for booking with us!