Bartel Amplifiers is a boutique guitar amplifier company based in Baltimore, Maryland, founded by Mark Bartel. An electrical engineer by training, Bartel previously founded Tone King Amplifiers in 1993 before departing to launch Bartel Amplifiers LLC, where he handbuilds every amp himself, including custom turret boards and molded knobs. The company focuses on all-tube, handwired construction housed in solid wood cabinets, with a design philosophy aimed at producing a natural, acoustic-like sonic presentation.

The Signature Series consists of three combo models: the 12-watt Sugarland, the 28-watt Starwood, and the 45-watt Roseland. The lineup also includes the Swingland, a low-wattage combo designed to deliver the dynamics and feel of a higher-wattage amp. The amps draw on vintage-inspired, purist circuit designs while incorporating Bartel's own engineering refinements.

The brand has built a reputation among players seeking refined clean tones and touch-sensitive dynamics, and has been featured in outlets including Premier Guitar and Guitar Player. Mark Bartel has discussed designing amps with players such as Bill Frisell and Julian Lage in mind.

Bartel has 9 products cataloged on Equipboard, including Combo Guitar Amplifiers, Guitar Amplifier Heads, and Guitar Amplifier Cabinets.