The album was then released in compact disc format in retail stores on December 3, 2013.
However, instead of pushing back the release date as announced, Funk Volume decided to release the album on its initial date of November 26, for digital download and compact disc format through their website. Though the album's release date was originally scheduled for November 26, 2013, Funk Volume announced on their Facebook page on November 18 that it would be very hard to find Knock Madness in stores the first week of its release, due to a delay and few stores placing orders for the album. Dominick Grillo of DJBooth noted that Hopsin's 'technical passionate wordplays offer constant comparisons to Eminem', concluding that the album is 'a dark, often violent creative response to the pressure now resting on Hopsin's shoulders', conceding that there are moments when Hopsin 'weighs himself (and the audience) down with layers upon layers of negativity', though admitting that the album 'works best when Hopsin is either angrily fighting or humorously poking fun at some sort of ludicrosity.' Commercial performance Jordan Sowunmi of Exclaim! stated that the album excels when Hopsin 'focuses on external obsessions: ode to amateur skating 'Nollie Tre Flip' has the most enticingly offbeat rapping on the album, as well as a dizzying internal rhyme scheme, while 'Turn on the Lights' analogue 'Dream Forever' is heartfelt and raw.' David Jeffries of AllMusic praised the album's consistency for providing 'shocking lyrics and infectious hooks', highlighting 'Rip Your Heart Out' featuring Tech N9ne as a standout track. The music video for 'I Need Help' was released on April 6, 2014. The same day, Hopsin and Tech N9ne filmed the music video for 'Rip Your Heart Out'. 'Rip Your Heart Out', featuring Tech N9ne, was released as the album's third single on November 12, 2013. However, the single's release, with its accompanying music video, was delayed until October 22, 2013. On August 18, 2013, Hopsin confirmed in a Facebook status that the lead single from Knock Madness, titled 'Hop Is Back', would be released in a couple of weeks.
He later confirmed that the song is not the sixth in the 'Ill Mind of Hopsin' series but rather the first single from Knock Madness. On July 17, 2013, Hopsin released the music video for 'Old Friend' on both his YouTube channel, and the single to iTunes.