Item #1540254 Model #MRC4-G-gmtl-RM-TBSB-

Reverend Mercalli 4 Roasted Maple Electric Bass Guitar Gunmetal


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A 4-string bass loaded with deep tones and vintage warmth.

The Reverend Mercalli 4-string electric bass takes its name from Giuseppe Mercalli, a turn-of-the-century scientist who invented the scale to measure earthquake intensity. It's an appropriate choice, because this bass is full of big tones that seem to emanate from deep below. But it's more than that—the Mercalli also has crisp clarity and vintage warmth. A close look at the build reveals the details that give the Mercalli 4 its magic.

A roasted maple neck with a roasted maple fretboard joins the korina body with a six-bolt plate. Loaded with a Thick Brick pickup (bridge) and Split (neck), this earth shaker punches like a pro with plenty of output, but has the organic openness that passive pickups provide. The controls keep it simple: master volume, master tone and blend. There are no heavy tuners here—Hipshot Ultralight are just that. Fashioned from aircraft-grade aluminum, they keep the Mercalli balanced and comfortable to play. The High Mass bridge can be strung string-thru or top-loaded and is made with a massive base plate for maximum sustain.

Other features include custom dome knobs, Boneite nut, and a hand-signed, initialed headstock.
  • Shape: Oval
  • Wood: Multi-piece Roasted maple
  • Neck joint: Bolt-on
  • Scale length: 34"
  • Truss rod: Dual-action
  • Finish: Satin
  • Pickup configuration: HH
  • Neck: Proprietary Humbucker
  • Bridge: Proprietary Humbucker
  • Control layout: Master volume Master tone Blend
  • Material: Roasted Maple  
  • Radius: 12"
  • Fret size: Medium-jumbo
  • Number of frets: 21
  • Inlays: Dot
  • Nut material/width: 1.84 in. (46.8 mm)
  • Body Type: Solid Body Offset
  • Body wood: Korina
  • Body finish: Gloss Varnish
  • Bridge/Tailpiece: String thru body
  • Tuning machines: Open-gear
  • Color: Chrome
  • Number of strings: 4 String
  • Case: Sold Separately
  • Country of origin: South Korea
  • Orientation: Right Handed


  • Korina body
  • Roasted maple neck with medium oval-shape, roasted maple fretboard
  • Thick Brick pickup (bridge), Split (neck); master volume, tone and blend controls
  • High Mass bridge that can be strung string-thru or top-loaded, Hipshot Ultralight tuners, Boneite nut