Faber is a German company, established in 1948, that sells guitars, guitar parts, effects and amplifiers.

Source: Faber website(14 February 2022)

DV Mark is part of the Mark World group of brands owned by the Italian Parsek company. Parsek was founded by Marco de Vigiliis, and their DV Mark brand is aimed at guitarists with a product range including: amplifiers, cabinets, effects pedals and electric guitars.

Source: DV Mark website (7 February 2022)

West Laboratories was an amplifier brand founded by David W. West in 1963. It started out as a Hi-Fi shop in Okemos, Michigan - when Dave West began to build amps for local guitarists. In 1971 they were producing 2 solid state power amp models (J500 & J250) and 3 tube amplifier heads (the Fillmore, Grande and Avalon models). They were owned by Canfield-Marshall Inc - Dave West had left the company by 1972.

Source: West Labs catalog 1971

Source: West Labs website (archived 2007)

Rich Grimaldi founded Grimaldi Amplification Inc. in 2001. Grimaldi makes custom, vintage style vacuum tube guitar amplifiers. He designs and constructs dovetailed hard wood cabinets covered with cloth and Tolex and hand wires all of the electronics. He also repairs musical amplifiers and consumer electronics.

Source: Rich Grimaldi website (13 January 2022)

TUSC was a tube amplifier company based in Central Islip, NY and run by Craig Frye. They produced a range of programmable tube amplifiers in the early 1980s: the range included heads (CF50, CF100), cabinets (using FANE speakers) and combo amplifiers (DF50, DF100 and CR100).

Source: TUSC catalog 1981

Harry Joyce Guitar Amplifiers are hand built in the United States of America to the highest specifications, using only the very best components available. Point-to-point wiring finished to Harry Joyce’s exacting military standards. Each Harry Joyce amplifier is carefully assembled and hand soak-tested in their U.S. facilities.

At Standard Guitars we're proud to craft the vintage guitars of today; true to vintage specifications and tonal qualities and completely manufactured by hand in the United States at trully affordable prices.

From the heart of Route 66 in the Southwest United States, we're here to bring back authenticity and pride to the guitar world. Our mission is not one that concentrates on the profit but one aimed at quality, tone and craftmanship at prices accessible to all musicians and guitar enthusiasts. 

We believe in hand-made craftmanship and attention to detail. Every instrument is crafted by hand and not CNC machines, no mass production lines, no outsorcing, and we used the same vintage methods used to build the vintage icons we so revere today. No shortcuts, no excuses.

Source: standardguitars.com (5 May 2021)