Full Description
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Built for lower than low
The G4M 638 Baritone is tuned to B standard, with the lowest string being the B below a regular six string guitar, offering a familiar six-string layout with the same string intervals but a deeper sound. Whether you're coming from guitar or bass, this format makes it easy to drop into extended tunings without completely relearning your instrument.
The 27” scale length keeps low notes tight and responsive, paired with .013–.062 strings, it delivers the tension you need to stay punchy in the lower registers. This makes it ideal for players exploring heavy, slow, or experimental styles that demand more sonic depth than a standard guitar can deliver.
Hybrid tone that cuts through
Dual ceramic humbuckers give the 638 Baritone a bold, modern voice that works well with distortion and low tunings. These pickups offer enough output to stay aggressive, but with enough clarity to define each note, especially important when working in the lower frequencies.
Whether you're using it to fill out a mix, replace or double a bassline, or push riffs into new sonic territory, the pickups offer a clean foundation without needing excessive EQ or gain shaping. A simple control layout, just volume, tone and a 3-way switch, keeps things efficient.
Hardware that holds tuning steady
The hardware on the 638 is chosen to handle the physical demands of low tuning. A fixed Tune-O-Matic bridge and string through ferrules keeps intonation locked in, and individual saddles make setup precise across all six strings, essential when tuning outside of traditional ranges. With die-cast tuners and chrome hardware throughout, the setup is stable, serviceable, and easy to dial in for whatever tuning or gauge you want to run.
Comfortable playability across a long scale
Despite the extended scale, the G4M 638 plays fast and comfortably thanks to its satin-finished roasted maple neck and modern C-shaped profile. The flat 16” fretboard radius and extra jumbo frets make note articulation and bending feel natural, even on heavier strings, while the roasted maple is ultra comfortable under the fingers. This is a neck that feels familiar to most guitarists and is built to handle the demands of lower tunings without compromise.
Specifications
General
- Number Of Strings: 6
- Dexterity: Right Handed
- Joint/Construction: Bolt-On
Body
- Material: Alder
- Colour (Top): Black Matte
- Colour (Back/Sides): Black Matte
Neck
- Material: Roasted Maple
- Fretboard Material: Laurel
- Headstock Finish: Black Matte
- Neck Binding: Black
- Headstock Binding: Black
- Radius: 16”
- Profile Shape: C
- Number of Frets: 22
- Fret material + Size: Nickel Silver, Jumbo
- Inlays and Material: Pearloid Blocks, White 2mm Side Dots
- Neck Finish: Natural Satin
- Nut Width: 42mm
- Nut Material: ABS
Hardware & Electronics
- Bridge Pickup: Black Covered Humbucker, Ceramic
- Neck Pickup: Black Covered Humbucker, Ceramic
- Volume Pot: 1 Volume Pot, 500k
- Tone Pot: 1 Tone Pot, 500k
- Switch Type: 3 Way Toggle Switch
- Switch Tip: Black Plastic
- Scratchplate: Black 3-Ply
- Input Jack: Regular
- Strap Bolts: Black Buttons
- Tuners: Black Die-Cast Tuners
- Bridge: Tune-O-Matic, Black
- Truss Rod: Regular Headstock Access
- Hardware Colour: Black
Dimensions
- Overall Length: 1085mm
- Overall Width: 330mm
- Overall Depth: 70mm
- Body Length: 510mm
- Body Depth: 44mm
- Upper Bout: 290mm
- Waist: 230mm
- Lower Bout: 330mm
- Scale Length: 27”
Misc.
- Accessories: Truss Rod and Bridge Saddle Allen Keys
- Strings: .013–.062

With a strong commitment to delivering an exceptional user experience, G4M offers a broad range of premium spec, high-quality instruments and technology across guitar, keys, live and studio categories.