B12M Medium Scale 12-String Basses

Hamer B12M 12-String Bass - Vintage Natural Finish.

Hamer B12M Solid Body 12-string basses

The Hamer B12M combined the body style of the B12S 12-string bass with the headstock of the B12A model with a 32" medium scale neck.


Hamer B12M 12-String Bass - Indigo Quilt Finish.

This bass has an Ebony fingerboard.


Hamer B12M 12-String Bass - '59 Burst Finish.


2004 Hamer B12M 12-String Bass in the Aztec Gold finish, built for Greg Gianakis. The body is mahogany with an Ultimate grade quilt front and back. Maple neck with an Ebony fingerboard.

This was the first 12-string bass Hamer built with Ultimate binding, which is the pearl on the body, neck and headstock. It has matching pearl dots.


Hamer B12M reportedly built for Jack Blades in 1987.


Odell Robinson's "Dreamsicle" Hamer B12M 12-string bass, a finish specially created for Robinson.

Odell Robinson on stage with the "Dreamsicle" Hamer B12M 12-string bass.


2007 White Hamer B12M 12-string bass with its custom order certificate.


2004 Hamer B12M 12-String Bass - Indigo Blue Finish with binding.

This Hamer B12M was built for Jim Morgan. The bass incorporates ivory-colored pickup mounts to match the binding and also an inlayed Hamer logo. Ten mother-of-pearl Gibson style crown inlays were used. As of January 1, 2008 Hamer no longer offered crown inlays due to Hamer being purchased by Fender Guitars, and Fender wanted to keep the crown inlays as a special option for their other brands of instruments.

Morgan reports, “The electronics are amazing! It has two independent EMG EXB active tone controls and two output jacks one for each pickup for stereo output. Each tone control effects treble, bass and mids: Rolling the tone controls all the way counterclockwise bypasses the active EQ and produces a (Rickenbacker) type sound but with plenty of punchy lows and highs. As you roll the tone control clockwise the tone becomes more rounded boosting treble and bass and cutting mid-range. I find setting the neck pick-up tone in the middle and the bridge pick-up tone rolled almost all the way back sounds best for most songs. The toggle switch allows me to run both stereo and mono outputs. In mono mode both pickups and electronics are blended and go to both outputs.”