Gretsch G6128-55 Duo Jet NOS MBGM

Gretsch G6128-55 Duo Jet NOS MBGM: Technical Review

The Gretsch G6128-55 Duo Jet NOS MBGM is a single-cut electric guitar, masterbuilt by Gonzalo Madrigal. Its listed construction pairs a genuine mahogany body and neck with a laminated curly maple top and an ebony fingerboard. The Sapphire Blue Trans finish is described as NOS lacquer, while the hardware is gold. The listed price is 8333, with no currency specified in the supplied data.

These details establish the guitar's materials and configuration, but they do not provide measurements for its weight, body thickness, or neck dimensions. There is also no customer feedback available. The assessment here therefore sticks to the documented specifications rather than making claims about sound, feel, or long-term reliability.

Body, Neck, and Fingerboard

The body and neck are both specified as genuine mahogany. The top is laminated curly maple, a construction detail worth distinguishing from a solid maple top. The neck profile is listed as C-shaped. No additional measurements are provided for neck thickness, width at the nut, or string spacing, so those aspects cannot be evaluated from the available information.

The ebony fingerboard has a 12-inch radius and 22 vintage frets. Its inlays are described as engraved mother-of-pearl hump designs. The combination of a named radius, fret count, and inlay material gives a clearer picture of the fingerboard's specification than the brief model description alone. However, the data does not identify fret dimensions or fingerboard width.

The stated scale length is 625 mm. That measurement is relevant when comparing this guitar with instruments of different scale lengths, though scale alone does not establish string tension or playing feel. Those also depend on string gauges, setup, and other factors that are not listed here.

Three-Pickup Layout and Circuit

The pickup system uses three humbuckers, with distinct models assigned to different positions. At the bridge is one TV Jones Power'Tron S Plus humbucker. The middle and neck positions each use a Seymour Duncan Dynasonic humbucker. The circuit is described as a triple-pickup setup with treble bleed.

This is a specific parts list, but it does not include output readings, switching details, control layouts, or a wiring diagram. The supplied information does not state how the three pickups can be combined or whether the controls offer additional switching options. Those points should be confirmed before purchase if a particular pickup combination or control arrangement is important.

The treble-bleed circuit is explicitly named, but no further circuit values or operating details are given. It is therefore possible to report its inclusion, not to predict precisely how the guitar's volume control will behave in every setup.

Bridge, Tailpiece, and Tuning Hardware

The bridge is a Gretsch Synchro-Sonic model, paired with a Bigsby B3G tailpiece. The source also describes the tremolo as Bigsby-style. Waverly machine heads complete the listed tuning hardware, and the guitar has gold-finished hardware. The specifications do not state the bridge's adjustment range, the tailpiece's operating characteristics, or whether the machine heads are locking models.

The hardware names help identify the components more precisely than a generic bridge-and-tailpiece description. Still, no setup measurements are supplied, such as action, intonation, or tremolo arm position. These are relevant inspection points for an individual instrument and cannot be inferred from the model's specification sheet.

Finish, Case, and Purchase Details

The color is listed as Sapphire Blue Trans, with an NOS lacquer finish. The description does not define what NOS means for this finish, so it should be treated as the maker's finish designation rather than expanded into an unsupported claim about age, wear, or production history.

A hardshell case and certificate of authenticity are included. The general specification fields confirm that a case is included and a gig bag is not. No limited run is identified. The item number is 572930, and the sales unit is one piece.

Assessment

On paper, the G6128-55 Duo Jet NOS MBGM is defined by its mahogany body and neck, laminated curly maple top, ebony fingerboard, and three-pickup configuration. Its named bridge, Bigsby B3G tailpiece, Waverly machine heads, and included hardshell case add useful purchasing detail. The listing also identifies Gonzalo Madrigal as the master builder.

The available specifications do not support conclusions about tone, comfort, setup quality, or value compared with other guitars. There are no customer reviews to fill those gaps. Buyers considering this instrument should verify the actual price currency, current condition, setup, and control layout with the seller. Based strictly on the supplied data, it is a highly specified Duo Jet with clearly identified components and a documented case and certificate.