Sadowsky MasterBuilt 21-Fret Vintage M/J Bass
The Sadowsky MasterBuilt 21-Fret Vintage M/J bass offer the looks of a vintage M/J bass, but with that famous modern Sadowsky tone. This 5-string bass, seen here in a Burgundy Blackburst Transparent High Polish finish, features a sleek, undersized, chambered J-Style body that is made of American Swamp Ash. The neck is made of Roasted American Maple and features a Roasted American Maple fingerboard. Special features of this bass include a hum-cancelling Sadowsky J-Style neck pickup and a Sadowsky Quad-Coil Humbucker with Alnico V magnets. The active electronics have true bypass, Vintage Tone Control, treble and bass boost, and two 3-way toggles switch for pickup configuration (series / parallel / single coil). This bass also features light open gear Sadowsky tuners and the Sadowsky Quick String Release Bridge. Sadowsky MasterBuilt 21-Fret Vintage M/J basses are made exclusively in Germany. The weight of this bass is never more than 8.4 lbs (3.8 kg). A good choice for players who want a lightweight bass that offers a modern bass sound.
Construction

Body
The chambered Swamp Ash body is known for is bright, clear tone. We select the best American Swamp Ash for its unique resonant tonal qualities and striking grain patterns. Giving you a Sadowsky bass that both looks and sounds beautiful. For players who prefer a lighter bass.

Neck
A roasted maple neck featuring a double action truss rod for precise neck adjustment and two carbon fibre rods to reinforce the neck and maintain stability.

Fingerboard
Our roasted maple fingerboard gives the Sadowsky MasterBuilt a crisp, tight, bright and more aggressive sound, making it ideal for both funk and slap.
Hardware

Bridge
A brass 5-string Sadowsky Quick String Release Bridge for quick and easy string changes with a chrome finish and 18 mm string spacing.

Just-A-Nut III
The Sadowsky Just-A-Nut III offers you an adjustable nut for a more perfect bass setup. Made of durable Tedur.

Tuners
Five Sadowsky open gear light machine heads with a chrome finish.
Electronics

Pickups
A Sadowsky 5-String hum-cancelling J-Style neck pickup and a Sadowsky 5-String M-Style humbucker bridge pickup.

Electronics
Active Sadowsky 2-way electronics (bass and treble boost) with Vintage Tone Control (VTC). Controls for Volume, Balance, Vintage Tone Control, Treble and Bass (stacked). VTC knob has push/pull function for preamp bypass. 2x 3-way toggle switch for pickup configuration (series / parallel / single coil).

Strings
Sadowsky Blue Label stainless steel strings for electric bass. Stainless steel wrap with a hex core. Taperwound .130" string. Gauges: .045", .065", .085", .105", .130T".
Body
| Model | Sadowsky MasterBuilt 21-Fret Vintage M/J Bass |
|---|---|
| # Strings | 5-String |
| Body Shape | Sleek undersized J-Style body |
| Body Wood | American Swamp Ash |
| Finish | Burgundy Blackburst Transparent High Polish |
| Pickguard | Transparent |
Neck
| Neck Wood | Roasted American Maple (C-Shape, Bolt-On) |
|---|---|
| Fingerboard Wood | Roasted American Maple |
| Scale Length | 34" (864 mm) Long Scale |
| Nut | Sadowsky Just-A-Nut III |
| Nut Width | 1.75" (44.5 mm) |
| # Frets | 21 Hand-rounded Nickel Silver (width: 0.094" (2.4 mm) / height: 0.051" (1.3 mm)) |
| Inlays | White dot inlays |
Electronics
| Neck Pickup | Sadowsky passive hum-cancelling stacked J-Style pickup |
|---|---|
| Bridge Pickup | Sadowsky passive Humbucker (Quad Coil) with Alnico V Magnets |
| Preamp | Active Sadowsky 2-way electronics (bass and treble boost) with Vintage Tone Control (VTC) |
| Controls | Volume / Balance / Vintage Tone Control (P/P) / Treble and Bass (stacked) |
| Push/pull function at VTC knob for preamp bypass | |
| 1x 3-way toggle switch for humbucker pickup configuration (Series / Parallel / Single Coil) 1x 2-way toggle switch for J-Style pickup configuration (Series / Single Coil) |
Hardware
| Hardware Color | Chrome |
|---|---|
| Bridge | Sadowsky bridge with quick string release |
|
Bridge Total String Spacing | 2.83" / 72 mm |
|
Bridge Single String Spacing | 18 mm |
| Machine Heads | Sadowsky light open gear machine heads |
| Security Locks | Sadowsky S-Security Locks |
Accessories
| Bag / Case | Sadowsky Professional Road Bag, Genuine Leather |
|---|---|
| Back Cover | Matching wood compartment cover |
| Protector | Sadowsky Fretboard Protector |
| Tools | Hex key tools |
| Other | Individual Certificate of Authenticity |
Additional Info
| Strings | Sadowsky Blue Label, Stainless Steel, Taperwound, 045 - 130 |
|---|---|
| Weight | 8.6 lbs (3.9 kg) or less |
| Article Number | SMB21MJ5 51 ASH FR |
| Made In | Germany |
Included Accessories

Gig bag
Our Professional Genuine Leather Road Bag is made from hand-selected water buffalo leather.

Security Locks
The Sadowsky S-Style Security Lock System helps keeps your bass safe.

Sadowsky Fretboard Protector
The Sadowsky Fretboard Protector is designed to protect your frets and fingerboard during transport and storage.

Certificate of Authenticity
Individual Sadowsky MetroLine Certificate of Authenticity

Tools
Sadowsky hex keys and truss rod tool set.
Manuals
Schematic Drawings
