Found the following article online, use it to answer the question: What is the name of the album that was left unaltered aside from a remastering which sharpened the bass guitar sound and increased the volume of the vocals by approximately three decibels?  Soon afterward, in April 1993, Albini remarked to the Chicago Tribune that he doubted Geffen would release the completed album.  Albini commented years later that in a sense he felt he spoke about the situation "from a position of ignorance, because I wasn't there when the band was having their discussions with the record label.  All I know is ... we made a record, everybody was happy with it.  A few weeks later I hear that it's unreleasable and it's all got to be redone".  While Albini's remarks in the article drew no immediate reply from the group or its label, Newsweek ran a similar article soon afterwards that did.  Nirvana denied there was any pressure from its label to change the album's sound, sending a letter to Newsweek that said that the article's author "ridiculed our relationship with our label based on totally erronous  [sic] information"; the band also reprinted the letter in a full-page ad in Billboard.  Rosenblatt insisted in a press release that Geffen would release anything the band submitted, and label founder David Geffen made the unusual move of personally calling Newsweek to complain about the article.Nirvana wanted to do further work on the recorded tracks, and considered working with producer Scott Litt and remixing some tracks with Andy Wallace (who had mixed Nevermind).  Albini vehemently disagreed, and claimed he had an agreement with the band that it would not modify the tracks without his involvement.  Albini initially refused to give the album master tapes to Gold Mountain, but relented after a phone call from Novoselic.  The band decided against working with Wallace and chose to remix and augment the songs "Heart-Shaped Box" and "All Apologies" with Litt at Seattle's Bad Animals Studio in May 1993.  Furthermore, a remix of "Pennyroyal Tea" by Scott Litt (at Bad Animals on November 22, 1993) appears on the censored Wal-Mart and Kmart versions of In Utero; this remix is also available on the band's 2002 best-of compilation, Nirvana, and is the same mix that appeared on the single....
Answer:
In Utero