hidden track, was released on 17 October 2005. In 2006, the band played numerous festival dates including opening the main-stage at Download Festival, UK. Insider (2006–2008) Their second album, titled Insider includes 12 tracks, three of which were posted to the band's MySpace before the album's release. The band also recorded extra tracks to be used as future B-sides. The album was released on 29 September 2006 in Germany and Austria and 2 October in the rest of Europe on SPV in a digipak with 12-page booklet. "Procedures" was chosen as a radio single to promote the album and has been played by Zane Lowe on Radio One. No singles from the album will be released to the public. A video for "Procedures" was filmed during the band's Munich show, on the European tour. After their own UK and European tour, Amplifier were main support for Opeth's European Tour. During their European tour in early 2007 they were supported by the Swiss indie rock band Cloudride. Before taking time to write and record their third album Amplifier were main support to Porcupine Tree on their UK tour in April 2007. The Octopus (2009–2012) In March 2008, Amplifier confirmed that they were recording their third and fourth albums simultaneously. In January 2010, Amplifier confirmed that this had changed and that they planned to release the combined works as a double album, named The Octopus. The album was released online a year later in 2011, quickly followed by a full release on 21 February 2011. It was met with generally positive acclaim in the press. After his former band Oceansize had broken up, guitarist Steve Durose joined Amplifier for their 2011 tour. In mid-2012 the band announced the departure of Neil Mahony who was replaced by Alexander "Magnum" Redhead for the band's support tour with Anathema the same year. Echo Street and Sunriders EP (2013–2014) Their fourth album Echo Street was released in March 2013. The band stated that they recorded the album in sixty days. It is also their first effort under their new record label, Kscope and the first one to chart, peaking at number 90 on the German Albums Chart. The band began touring in mainland Europe and the UK in spring, after headlining the Pearl Festival in Hyderabad, India. On 20 November 2013, the Sunriders EP was released online. Mystoria and Residue EP (2014–2015) The band moved to