Their music has been described as "Soundgarden, Tool, Black Sabbath, Oceansize and Pink Floyd taking copious amounts of mind-altering substances and venturing on a trip through time and space (to another dimension), and back again.

"[1] Their music is characterised by guitarist Sel Balamir's effect pedals, Matt Brobin's complex drumming, extended heavy sections, atmospheric compositions and philosophical lyrics.

[citation needed] After forming around 1998 Amplifier toured the UK and recorded a few demos and sent promo CDs to labels and the press.

After being signed in May 2002 by British label Music for Nations, Amplifier were asked to support Deftones at Manchester Apollo.

After the two singles "The Consultancy" (b/w "Glory Electricity") and "Neon" (b/w "Boomtime" and "Throwaway"), the band’s self-titled debut album, Amplifier, was released on 6 June 2004 by Music for Nations – which is a subsidiary of the larger label distributor Zomba Records – and was very well received by English media and critics.

Before taking time to write and record their third album Amplifier were main support to Porcupine Tree on their UK tour in April 2007.

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.

[4] The band began touring in mainland Europe and the UK in spring, after headlining the Pearl Festival in Hyderabad, India.

The band moved to the Superball Music label early in 2014 and began work on their fifth album, Mystoria, recording at Monnow Valley Studio in the May of that year.

In 2018, Amplifier re-released their critically acclaimed, self-titled debut LP on the Rockosmos label as CD and 2LP, followed in April 2019 by The Octopus on 4LP.

[9] Two weeks ahead of its official release date on April 7, Hologram was premiered online on the Rockosmos Youtube channel.

Amplifier released a DVD/CD package entitled Live in Berlin in 2009, comprising the following tracks "Continuum", "Fall of the Empire", "Panzer", "Motorhead", "The Wave", "Interglacial Spell", "Interstellar", "Golden Ratio" and "Neon".