Elliot Daly scored a hat-trick as London Wasps secured a comfortable victory over Viadana in their final Amlin Challenge Cup pool match.
Wasps, who had already qualified for the quarter-finals, were 31-5 up at the break after Daly's treble and tries from Ashley Johnson and Tom Varndell.
After half-time, Varndell grabbed his second as William Helu, Joe Carlisle, Joe Simpson and Taione Vea also scored.
Carlisle kicked 14 points as Wasps confirmed a home tie in the last eight.
Winger Nicola Sintich scored for Viadana early in the first half and the Italian side pulled tries back through number eight Mirko Monfrino and scrum-half Pietro Travagli in the second period, with fly-half Juan Pablo Sanchez adding a conversion.
Wasps director of rugby Dai Young had made five changes to the XV that beat Bayonne last week, with a sixth enforced after James Haskell dropped out before kick-off through illness.
Having won all six of their matches in Pool Four, Wasps qualify top of the group.
They will face Gloucester, who enter the competition after finishing second in their Heineken Cup pool, at Adams Park in the quarter-finals.
London Wasps: Daly; Bassett, Bell (capt), Suniula; Varndell; Carlisle, Davies; McIntyre, Lindsay, Swainston; Palmer, Myall; Johnson, Thompson, Jones.
Replacements: Vea for McIntyre (50), Taylor for Swainston (50), Simpson for Davies (50), Goode for Carlisle (61), Lozada for Myall (56), Jackson for Johnson (63), Helu for Bell (63).
Not Used: Festuccia.
Viadana: Gennari; Sintich, Yakopo, Tizzi, Amadasi; Sanchez, Travagli; Cenedese, Denti, Ryan; Minari (capt), Prinsloo Horn; Manuini, Denti, Monfrino.
Replacements: Pelizzari for Manuini (52), K. J. Apperley-Iti for Tizzi (55), Pavan for Yakopo (62), Pascu for Prinsloo Horn (63), Bigi for Denti (65), Marchini for Cenedense (72), K. S. Apperley-Iti for Travagli (72), Greco for Ryan (79).
Referee: Alexandre Ruiz (France).