The concert venue downtown sold all 642 tickets in about seven hours Monday.
Rundgren's heavy piano and saxaphone riffs will headline the May 14 show.
The spring show will mark the musician's third visit to Kent. In the 1970s Rundgren played two shows at Kent State University.
The second fastest sell-out at the stage was for singer Brandi Carlile, but that ticket sale spanned more than one day.
Click here for more information on Rundgren's 2013 tour dates.