Yerasov Music Corporation was founded by Alexander Yerasov in 1988. Yerasov was born in 1953 in the Soviet Union and started out by building tube amplifiers using parts from broken sound equipment from movie theaters. When Perestroika happened in the Soviet Union, Yerasov took the opportunity to launch his own company and hired a talented group of engineers to design and make his products. Yerasov is now a well known amplifier and effects brand worldwide.

Source: Yerasov Music Corporation website (11 July 2023)

Sioux Guitars is a guitar effects and amplifiers company founded by Ryan Mayers in Sioux City, Iowa.

Source: Sioux Guitars website (25 April 2022)

Xvive was founded in 2014 (as Xvive Audio) by the husband-and-wife team of Nancy Lee and Fischer Mao. Their first product was to resurrect the MN3005 bucket brigade chip. Soon followed a line of effect pedals in collaboration with German guitarist Thomas Blug. These included the W3 Memory Analog Delay—designed by Howard Davis (designer of the legendary Deluxe Memory Man) and including the new MN3005 chip. In 2016, Xvive entered the wireless market with the U2 Guitar Wireless System. This paved the way for other wireless systems, designed for microphones (U3), in-ear monitors (U4), MIDI (MD1) and audio for video (U5). Xvive products are manufactured in Shenzhen, China - where they also make products for other top music brands. 2020-2021 saw the release of the P1 Portable Phantom Power Supply, the MD1 MIDI Wireless System, and the U5 Wireless Audio for Video System.

Source: Xvive website (1 May 2022)

Pharaoh Amplifiers was founded by Matthew Farrow as a maker of guitar effects and accessories. The company started in the late 1990s and their first offering was the CLASS-A BOOST pedal sold direct to the public through their website, and on Ebay.

The brand was discontinued around 2010 when Farrow founded Disaster Area Designs.

Source: Pharaoh Amplifiers website (archived 2008)

Valeton is a Chinese effects pedal brand. The team behind Valeton had been producing designing and building products for other brands for 10 years before coming together as a single company, with a new catalogue of original designs. The range  includes affordable effects pedals, multi-fx processors and amplifiers.

Source: Valeton website (14 March 2022)

Matthews Effects is a guitar effects company founded by Rick Matthews in Eastern Washington, USA. Rick started by building switches as he tried to learn more and more about circuits and what made them tick. He was hired and then mentored by Keith Vondurhulls of buildyourownclone.com which set him on the path to build his own circuits. Through approaching designing from a different perspective Rick has been able to design circuits and pedal layouts that are unique and inspiring.

Source: Matthews Effects website (25 March 2022)

KMA Machines is a German guitar effects company founded by Enrico Preuß. He started out doing  one-off custom pedals for friends and fellow musicians. In 2013 he decided to make a business out of it - his first product was a ‘Jordan Bosstone’ clone with a bias control and a wider frequency range called the Fuzzly Bear. His friend Karlowitsch, a talented graphic designer, provided the graphic design for that pedal and they have worked together ever since. Initially, the business was run in Enrico's shared apartment but due to the growth of KMA Machines popularity they are now in  to their own workshop in Berlin. KMA pedals tend to be versatile with intuitive features and controls giving a wide pallet of tonal options. Influenced by vintage sounds and modern stuff, KMA aim to bring both worlds together, by taking classic and well-known circuits and give them a modern touch to fit the needs of modern musicians.

GAMECHANGER AUDIO was started in 2015 by Ilja Krumins, Kristaps Kalva, Martins Melkis and Didzis Dubovskis. Their first project was to create a sustain and sostenuto pedal for all musical instruments. The first prototype of the PLUS Pedal was completed in December 2016. The following year, the PLUS Pedal was brought to life through a successful crowdfunding campaign, and it became widely available in 2018. Their next project was the revolutionary PLASMA Pedal. The PLASMA was also successfully crowdfunded, and manufacturing began in the Autumn of 2018. Since then, they have gone on to develop the MOTOR Synth, the LIGHT Pedal, three additional variations on the PLASMA Tube circuit, and most recently the BIGSBY Pedal. Their research and manufacturing base is in Riga, Latvia.

Source: Gamechanger Audio website (22 March 2022)

Daredevil Pedals was founded in Chicago in 2012 by Johnny Wator as a hand-built effects pedals company. Johnny is the frontman and guitarist for the Evictions and he started out building effects pedals for his own needs.

Source: Daredevil Pedals website (22 March 2022)