In syndication, the first 52 episodes, from when the show was animated by Ruby-Spears Productions, along with the Valentine's and Reunion specials, from 1984 and 1985 respectively were purchased along with the first 11 episodes of season 6. In addition, most of, if not all of the episodes were time-compressed, and resulted in an increase in pitch. All episodes that have been released on VHS and DVD, have the original proper pitch reinstated.
At least 2 episodes that were released on DVD have the original songs altered. They are, from "Curse of Lontiki", "Surfin' U.S.A." by The Beach Boys, and from "Theodore and Juliet", "Love Potion No. 9". "Curse of Lontiki", which was released on "The Alvinnn!!! Edition" DVD, replaces "Surfin' U.S.A." with "Surfin' Safari", also by The Beach Boys, while "Theodore and Juliet", which was released on the "Chipmunk Valentine" DVD, replaces "Love Potion No. 9" with "Witch Doctor". The 1996 VHS release of that episode retained the original song.
A modern Bagdasarian Productions logo replaced the earlier ones that were seen from 1983-1987 in syndication, and on Nickelodeon and Cartoon Network reruns.
The title cards that opened each episode were featured in syndication, and on Nickelodeon, but were dropped entirely on Cartoon Network reruns. Some VHS and DVD releases have them, others don't. Oddly enough, Cartoon Network reruns kept Alvin's introductions from the first season that featured clips from today's episode or episodes.
Originally, during seasons 6 & 7, the show was retitled "The Chipmunks", and those particular seasons consisted of two different openings: One that was used during the first half of season 6, featured clips from The Chipmunk Adventure (1987), while the other, which was used for the remainder of season 6 until the end of season 7, featured the Chipmunks exiting the Mercedes. Both variations featured a hard-rock version of "We're the Chipmunks". When the first 11 episodes of season 6 were syndicated, the show used the original opening from the first 5 seasons, but with the new version of "We're the Chipmunks" dubbed over.
Region 1 DVD releases omit the Ruby-Spears Enterprises logo.