Promethean Instruments is an electric guitar and bass maker, based in Melbourne Australia. They specialise in longer scale instruments - ideal for lower tunings.

Source: Promethean Instruments website (15 May 2024)

I have seen various D'Orso branded acoustic guitars - ranging from old-style small bodied romantic guitars from the 1890s to more recent 1920s-1930s classical guitars. Usually attributed to German or Austrian manufacture.

Red Panda is an effects company founded by Curt Malouin, that specialises in DSP-based pedals. Curt was designing software synthesizers, but moved into hardware in 2009 - launching the Red Panda bitcrusher pedal. 2011 saw the release of their pioneering granular delay pedal - the Particle, which allowed musicians to bring granular synthesis from computers to live performances. Red Panda operates with a small, dedicated team in Detroit, their ethos is rooted in deep algorithm research and user-centered design. Currently, they are developing a second generation of pedals with enhancements like stereo inputs/outputs, programmable presets, and MIDI control, coupled with a web-based editor for detailed sound tweaking.

Source: Red Panda website (10 May 2024)

Mutzil Lab is a South Korean electric guitar brand established in 2018. Their team includes luthier Lee Jung-Hyung and Korean traditional natural laquer artist An So-ra.Mutzil aims to create instruments that connect the east and west, the past and the present.

Lee Jung-hyung studied Metalwork & Jewelry in University, also learning woodworking skills which he used to make his own musical instruments. Between 2010 and 2017 he experimented with different designs and refined his own style of electric guitar.

An So-ra studied Cultural heritage preservation at University. She specialised in Ott lacquer (a traditional Korean lacquer technique) and received a master’s degree in lacquer refining and lacquer techniques. She also learned how to work with mother-of-pearl from Jeong Su-hwa, the holder of the National Intangible Cultural Property No. 113.

Gyrock is a rotary pickup system for electric guitars developed by Wild Customs in France. The system has two rollers: one in the neck and one in the bridge position. Each roller is operated mechanically by its own switch and each one houses up to 3 pickups - so you can have up to 6 different pickups in the guitar at any one time. The rollers can also be swapped from the back of the guitar to give you even more pickup options. Wild Customs have partnered with Seymour Duncan as the pickup provider on their starter pack - but the system can also be used with other pickups. Works with single coil pickups and narrow-sized humbuckers.

Source: Gyrock website (1 May 2024)

Orso is a one-man custom electric guitar company based in Lyon, France

De Leeuw Guitars is a French maker of custom neck through electric and bass guitars. Instruments are made in their workshop in Pont-Sainte-Maxence, but can also be viewed (by appointment) in their Paris showroom.

Source: De Leeuw Guitars website (28 April 2024)

Armand Sentous has been making custom guitars and basses under the Sentous brand name since around 2019.

Source: Sentous Guitars website (28 April 2024)

Hungry Robot Pedals is an effects pedals and synth module company founded in 2012 by Eric Junge. In 2021 they relocated from North Carolina to Iowa.