Short answers, pulled from the story.
The Capitol Albums Volume 2 arrived on the market as a box set compilation composed of the Beatles' 1965 American Capitol Records releases. This collection contained stereo and mono versions of all 92 tracks from four albums.
The set was announced on the 22nd of March 2006 to the public. Fans waited weeks for the official launch date of the 11th of April 2006.
Some fans preferred the original British George Martin mixes over the American versions included here because the CDs did not contain those original mixes released in Britain in the 1960s. Instead, the CDs were mastered from tapes prepared by Capitol A&R executive Dave Dexter Jr who added reverb and applied simulated stereo on some mono tracks.
It sold approximately 27,000 copies during its first week of availability. The record was awarded a gold certification by the RIAA on the 19th of May 2006.
Box sets and sampler discs made available prior to the 11th of April release date contained incorrect mono versions of Beatles VI and Rubber Soul that are actually the stereo mixes consolidated into both speakers. Bruce Spizer told the fan website What Goes On that a third party mastering facility incorrectly sent stereo-to-mono mixdowns to be pressed instead of the true mono mixes released by Capitol in 1965.