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MasterBuilt MetroLine MetroExpress Limited Edition Special Edition

MasterBuilt
The Sadowsky MasterBuilt is our higher-end range of instruments. They offer the finest hand-selected tone-woods, lighter-weight chambered bodies for superior tone, premium Sadowsky hardware, the famous Sadowsky active electronics, Sadowsky pickups, a wide range of different finishes and other premium options. All MasterBuilt models are manufactured in our carbon-neutral workshop in Germany.
View all MasterBuilt

Filters:
21-Fret Standard J/J Bass
21-Fret Vintage J/J Bass
21-Fret Hybrid P/J Bass
24-Fret Modern Bass
24-Fret Single Cut Bass
Artist Line - Verdine White
Artist Line - Will Lee
21-Fret Vintage M/J Bass
20-Fret Ultra Vintage P-Bass
21-Fret Vintage M Bass
20-Fret Ultra Vintage J/J Bass
24-Fret Standard J/J Bass
24-Fret Vintage J/J Bass

MetroLine
Sadowsky MetroLine basses are manufactured true to the philosophy that the most important factor affecting the sound of a solid-body instrument is the acoustic quality of the wood. Available in a wide range of different finishes, the bodies are made of hand-selected American Swamp Ash, American Red Alder or Okoume. Each bass is equipped with Sadowsky hardware, the famous Sadowsky active electronics and Sadowsky pickups. All MetroLine models are manufactured in our carbon-neutral workshop in Germany.
View all MetroLine

Filters:
21-Fret Vintage J/J Bass
21-Fret Hybrid P/J
21-Fret Vintage P/J Bass
24-Fret Modern Bass
24-Fret Vintage J/J Bass
Artist Line - Verdine White
Artist Line - Will Lee
21-Fret Vintage M/J Bass
24-Fret Single Cut Bass
24-Fret Vintage Single Cut Bass
21-Fret Vintage M Bass
21-Fret Vintage J/J Solidbody Bass
21-Fret Hybrid P/J Solidbody Bass
24-Fret Standard J/J Bass
Deluxe 21-Fret Standard J/J Bass
Deluxe 24-Fret Modern Bass

MetroExpress
Sadowsky MetroExpress models offer the perfect entry into the world of Sadowsky basses. Manufactured in Asia to our highest standards with ongoing quality controls, our MetroExpress basses combine lightweight Okoume bodies with Maple or Morado (Pau Ferro) fretboards. In addition to the standard models, the series includes many left-hand and fretless versions.
View all MetroExpress

Filters:
21-Fret Vintage J/J Bass
21-Fret Hybrid P/J Bass
21-Fret Verdine White Artist Line
21-Fret Vintage M/J Bass
21-Fret Vintage M Bass
22-Fret Will Lee Artist Line
24-Fret Modern Bass

Limited Edition
Since 2020, Sadowsky has introduced a new limited edition model each year. Produced in strictly limited numbers, the limited editions are produced as MetroLine and MasterBuilt versions and always sell out quickly. In addition to the exclusive and highest quality tonewoods, the Limited Editions impresses with eye-catching finishes and the best possible hardware that make each instrument a masterpiece of instrument making.
View all Limited Edition

Sadowsky MetroLine 24-Fret Modern Bass, 2025 Limited Edition, 4-String - Natural Transparent Satin
Sadowsky MetroLine 24-Fret Modern Bass, 2025 Limited Edition, 5-String - Natural Transparent Satin
Sadowsky MasterBuilt 24-Fret Modern Bass, 2025 Limited Edition, 4-String - Natural Transparent High Polish
Sadowsky MasterBuilt 24-Fret Modern Bass, 2025 Limited Edition, 5-String - Natural Transparent High Polish
Sadowsky MetroLine 21-Fret Standard M/J Bass, 2024 Limited Edition, 4-String - Natural Transparent Satin
Sadowsky MetroLine 21-Fret Standard M/J Bass, 2024 Limited Edition, 5-String - Natural Transparent Satin
Sadowsky MasterBuilt 21-Fret Standard M/J Bass, 2024 Limited Edition, 4-String - Natural Transparent Satin
Sadowsky MasterBuilt 21-Fret Standard M/J Bass, 2024 Limited Edition, 5-String - Natural Transparent Satin
Sadowsky MetroLine 21-Fret Standard J/J Bass, 2023 Limited Edition, 5-String - Majestic Red Transparent Satin
Sadowsky MetroLine 21-Fret Standard J/J Bass, 2023 Limited Edition, 4-String - Majestic Red Transparent Satin
Sadowsky MasterBuilt 21-Fret Standard J/J Bass, 2023 Limited Edition, 5-String - Majestic Red Transparent High Polish
Sadowsky MasterBuilt 21-Fret Standard J/J Bass, 2023 Limited Edition, 4-String - Majestic Red Transparent High Polish
Sadowsky MasterBuilt 21-Fret Standard M/J Bass, 2022 Limited Edition, 4-String - Natural Transparent Satin
Sadowsky MasterBuilt 21-Fret Standard M/J Bass, 2022 Limited Edition, 5-String - Natural Transparent Satin
Sadowsky MasterBuilt 21-Fret Standard M/J Bass, 2022 Limited Edition, 4-String - Natural Transparent High Polish
Sadowsky MasterBuilt 21-Fret Standard M/J Bass, 2022 Limited Edition, 5-String - Natural Transparent High Polish
Sadowsky MetroLine 24-Fret Modern Bass, 2021 Limited Edition, 5-String - Natural Transparent Satin
Sadowsky MetroLine 24-Fret Modern Bass, 2021 Limited Edition, 4-String - Natural Transparent Satin
Sadowsky MasterBuilt 24-Fret Modern Bass, 2021 Limited Edition, 5-String - Natural Transparent High Polish
Sadowsky MasterBuilt 24-Fret Modern Bass, 2021 Limited Edition, 4-String - Natural Transparent High Polish
Sadowsky MetroLine 21-Fret Standard J/J Bass, 2020 Limited Edition, 5-String - Whale Blue Burst Transparent Satin
Sadowsky MetroLine 21-Fret Standard J/J Bass, 2020 Limited Edition, 4-String - Whale Blue Burst Transparent Satin
Sadowsky MasterBuilt 21-Fret Standard J/J Bass, 2020 Limited Edition, 5-String - Whale Blue Burst Transparent High Polish
Sadowsky MasterBuilt 21-Fret Standard J/J Bass, 2020 Limited Edition, 4-String - Whale Blue Burst Transparent High Polish

Special Edition
Sadowsky Special Edition are extremely limited editions of our basses offering new and exciting combinations of different tone and body woods with unique finishes. Truly a feast for the eyes and the ears!
View all Special Edition

Sadowsky MetroLine 21-Fret Hybrid P Bass, 2024 Special Edition for Bass Freaks, 4-String - '59 Burst Transparent High Polish
Sadowsky MetroLine 24-Fret Modern Bass, 2023 Special Edition Nebula, 4-String
Sadowsky MetroLine 24-Fret Modern Bass, 2023 Special Edition Nebula, 5-String
Sadowsky MetroLine 24-Fret Modern Bass, 2021 Special Edition, 4-String - Natural Transparent Satin
Sadowsky MetroLine 24-Fret Modern Bass, 2021 Special Edition, 5-String - Natural Transparent Satin
Accessories

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Strings Pedals Bags Straps Pickups Electronics Parts and Tools Merch

Strings
If you place the highest demands on your instrument, you shouldn't make any compromises when it comes to the strings. Roger Sadowsky has made it his task to constantly improve the strings for his instruments and to adapt them to his high standards - the result are the Sadowsky strings for guitar and bass, which are offered in different versions and gauges for every taste.

Strings for E-Bass

Pedals
The Sadowsky preamp pedals are based on the active onboard bass electronics that Roger Sadowsky developed himself decades ago. Since then, the legendary circuit has set the tone in all of his basses - highly versatile yet easy to control, powerful and well-balanced in all frequency ranges. The preamp effects pedals bring that sound into a convenient stompbox format for any bass without the Sadowsky electronics.

Sadowsky SBP-1 - Bass Preamp / DI
Sadowsky SBP-2 - Bass Preamp

Bags
Roger Sadowsky designed his gig bags for busy New York City musicians who needed to carry their instruments on everything from subways, to busses, cars and even airplanes. Made from amazingly robust materials, these gig bags are unobtrusively streamlined, have cleverly integrated storage spaces and are equipped with many practical features.

Sadowsky Professional Road Bag Genuine Leather Bags, Black
Sadowsky Professional Road Bag - Electric Bass Gig Bag
Sadowsky PortaBag Express - Electric Bass Gig Bag

Straps
We offer a wide range of bass straps to fit your requirements and budget. All of them are comfortable and durable and make a great addition to your bass gear!

Sadowsky Nylon Bass Strap - Black, Gold Embossing
Sadowsky MasterBuilt Genuine Leather Bass Strap - Brown, Gold Embossing
Sadowsky Synthetic Leather Bass Strap - Black, Silver Embossing
Sadowsky MasterBuilt Genuine Leather Bass Strap - Black, Silver Embossing
Sadowsky MetroLine Genuine Leather Bass Strap - Black, Gold Embossing
Sadowsky MasterBuilt Genuine Leather Bass Strap - Black, Gold Embossing
Sadowsky Synthetic Leather Bass Strap with Neoprene Padding - Black, Gold Embossing
Sadowsky MetroLine Genuine Leather Bass Strap - Black, Silver Embossing

Pickups

J-Style Pickups
P-Style Pickups
P/J-Style Pickups
Soapbar Pickups
M-Style Pickups

Electronics

Sadowsky Electronics
Wiring Harnesses
Balance Potentiometers
Circuit Boards
Volume Potentiometers
VTC Potentiometers
Stacked Treble/Bass Potentiometers
Treble Potentiometers
Bass Potentiometers
Switches

Parts and Tools

Body Parts
Neck Parts
Pedal Parts
Tools

Merch

Sadowsky Promo - Logo T-Shirt, Black with White Print - Size M
Sadowsky - White embroidered Logo T-Shirt, Black - Size L
Sadowsky Promo - Logo T-Shirt, Black with White Print - Size L
Sadowsky - White embroidered Logo T-Shirt, Black - Size M
Sadowsky Logo Sticker (Die Cut), White on Black, 153 x 67 mm
Sadowsky Promo - Logo T-Shirt, Black with White Print - Size S
Artists
Craftsmanship
News

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News Videos
Support

close

FAQ Serial Numbers Contact
Buy

Menu
Instruments
- Instruments
- MasterBuilt
  
  MasterBuilt
  
  MasterBuilt
  The Sadowsky MasterBuilt is our higher-end range of instruments. They offer the finest hand-selected tone-woods, lighter-weight chambered bodies for superior tone, premium Sadowsky hardware, the famous Sadowsky active electronics, Sadowsky pickups, a wide range of different finishes and other premium options. All MasterBuilt models are manufactured in our carbon-neutral workshop in Germany.
  View all MasterBuilt
  
  Filters:
  21-Fret Standard J/J Bass
  21-Fret Vintage J/J Bass
  21-Fret Hybrid P/J Bass
  24-Fret Modern Bass
  24-Fret Single Cut Bass
  Artist Line - Verdine White
  Artist Line - Will Lee
  21-Fret Vintage M/J Bass
  20-Fret Ultra Vintage P-Bass
  21-Fret Vintage M Bass
  20-Fret Ultra Vintage J/J Bass
  24-Fret Standard J/J Bass
  24-Fret Vintage J/J Bass
- MetroLine
  
  MetroLine
  
  MetroLine
  Sadowsky MetroLine basses are manufactured true to the philosophy that the most important factor affecting the sound of a solid-body instrument is the acoustic quality of the wood. Available in a wide range of different finishes, the bodies are made of hand-selected American Swamp Ash, American Red Alder or Okoume. Each bass is equipped with Sadowsky hardware, the famous Sadowsky active electronics and Sadowsky pickups. All MetroLine models are manufactured in our carbon-neutral workshop in Germany.
  View all MetroLine
  
  Filters:
  21-Fret Vintage J/J Bass
  21-Fret Hybrid P/J
  21-Fret Vintage P/J Bass
  24-Fret Modern Bass
  24-Fret Vintage J/J Bass
  Artist Line - Verdine White
  Artist Line - Will Lee
  21-Fret Vintage M/J Bass
  24-Fret Single Cut Bass
  24-Fret Vintage Single Cut Bass
  21-Fret Vintage M Bass
  21-Fret Vintage J/J Solidbody Bass
  21-Fret Hybrid P/J Solidbody Bass
  24-Fret Standard J/J Bass
  Deluxe 21-Fret Standard J/J Bass
  Deluxe 24-Fret Modern Bass
- MetroExpress
  
  MetroExpress
  
  MetroExpress
  Sadowsky MetroExpress models offer the perfect entry into the world of Sadowsky basses. Manufactured in Asia to our highest standards with ongoing quality controls, our MetroExpress basses combine lightweight Okoume bodies with Maple or Morado (Pau Ferro) fretboards. In addition to the standard models, the series includes many left-hand and fretless versions.
  View all MetroExpress
  
  Filters:
  21-Fret Vintage J/J Bass
  21-Fret Hybrid P/J Bass
  21-Fret Verdine White Artist Line
  21-Fret Vintage M/J Bass
  21-Fret Vintage M Bass
  22-Fret Will Lee Artist Line
  24-Fret Modern Bass
- Limited Edition
  
  Limited Edition
  
  Limited Edition
  Since 2020, Sadowsky has introduced a new limited edition model each year. Produced in strictly limited numbers, the limited editions are produced as MetroLine and MasterBuilt versions and always sell out quickly. In addition to the exclusive and highest quality tonewoods, the Limited Editions impresses with eye-catching finishes and the best possible hardware that make each instrument a masterpiece of instrument making.
  View all Limited Edition
  
  Sadowsky MetroLine 24-Fret Modern Bass, 2025 Limited Edition, 4-String - Natural Transparent Satin
  Sadowsky MetroLine 24-Fret Modern Bass, 2025 Limited Edition, 5-String - Natural Transparent Satin
  Sadowsky MasterBuilt 24-Fret Modern Bass, 2025 Limited Edition, 4-String - Natural Transparent High Polish
  Sadowsky MasterBuilt 24-Fret Modern Bass, 2025 Limited Edition, 5-String - Natural Transparent High Polish
  Sadowsky MetroLine 21-Fret Standard M/J Bass, 2024 Limited Edition, 4-String - Natural Transparent Satin
  Sadowsky MetroLine 21-Fret Standard M/J Bass, 2024 Limited Edition, 5-String - Natural Transparent Satin
  Sadowsky MasterBuilt 21-Fret Standard M/J Bass, 2024 Limited Edition, 4-String - Natural Transparent Satin
  Sadowsky MasterBuilt 21-Fret Standard M/J Bass, 2024 Limited Edition, 5-String - Natural Transparent Satin
  Sadowsky MetroLine 21-Fret Standard J/J Bass, 2023 Limited Edition, 5-String - Majestic Red Transparent Satin
  Sadowsky MetroLine 21-Fret Standard J/J Bass, 2023 Limited Edition, 4-String - Majestic Red Transparent Satin
  Sadowsky MasterBuilt 21-Fret Standard J/J Bass, 2023 Limited Edition, 5-String - Majestic Red Transparent High Polish
  Sadowsky MasterBuilt 21-Fret Standard J/J Bass, 2023 Limited Edition, 4-String - Majestic Red Transparent High Polish
  Sadowsky MasterBuilt 21-Fret Standard M/J Bass, 2022 Limited Edition, 4-String - Natural Transparent Satin
  Sadowsky MasterBuilt 21-Fret Standard M/J Bass, 2022 Limited Edition, 5-String - Natural Transparent Satin
  Sadowsky MasterBuilt 21-Fret Standard M/J Bass, 2022 Limited Edition, 4-String - Natural Transparent High Polish
  Sadowsky MasterBuilt 21-Fret Standard M/J Bass, 2022 Limited Edition, 5-String - Natural Transparent High Polish
  Sadowsky MetroLine 24-Fret Modern Bass, 2021 Limited Edition, 5-String - Natural Transparent Satin
  Sadowsky MetroLine 24-Fret Modern Bass, 2021 Limited Edition, 4-String - Natural Transparent Satin
  Sadowsky MasterBuilt 24-Fret Modern Bass, 2021 Limited Edition, 5-String - Natural Transparent High Polish
  Sadowsky MasterBuilt 24-Fret Modern Bass, 2021 Limited Edition, 4-String - Natural Transparent High Polish
  Sadowsky MetroLine 21-Fret Standard J/J Bass, 2020 Limited Edition, 5-String - Whale Blue Burst Transparent Satin
  Sadowsky MetroLine 21-Fret Standard J/J Bass, 2020 Limited Edition, 4-String - Whale Blue Burst Transparent Satin
  Sadowsky MasterBuilt 21-Fret Standard J/J Bass, 2020 Limited Edition, 5-String - Whale Blue Burst Transparent High Polish
  Sadowsky MasterBuilt 21-Fret Standard J/J Bass, 2020 Limited Edition, 4-String - Whale Blue Burst Transparent High Polish
- Special Edition
  
  Special Edition
  
  Special Edition
  Sadowsky Special Edition are extremely limited editions of our basses offering new and exciting combinations of different tone and body woods with unique finishes. Truly a feast for the eyes and the ears!
  View all Special Edition
  
  Sadowsky MetroLine 21-Fret Hybrid P Bass, 2024 Special Edition for Bass Freaks, 4-String - '59 Burst Transparent High Polish
  Sadowsky MetroLine 24-Fret Modern Bass, 2023 Special Edition Nebula, 4-String
  Sadowsky MetroLine 24-Fret Modern Bass, 2023 Special Edition Nebula, 5-String
  Sadowsky MetroLine 24-Fret Modern Bass, 2021 Special Edition, 4-String - Natural Transparent Satin
  Sadowsky MetroLine 24-Fret Modern Bass, 2021 Special Edition, 5-String - Natural Transparent Satin
- Custom Shop
  
  Custom Shop
  
  CustomShop
  With the Sadowsky Custom Shop, the motto "If you can dream it, we can build it" really is true. We create your personal bass using the finest hand-selected tonewoods, a large selection of stunning exotic top woods, numerous hardware and pickup options, a huge range of custom finish options and other premium options - almost anything is possible! All Sadowsky Custom Shop models are produced in Germany in our climate-neutral workshop.
  View all CustomShop
  
  Filters:
  21-Fret Standard J/J Bass
  21-Fret Vintage J/J Bass
  21-Fret Vintage P/J Bass
  24-Fret Modern Bass
  24-Fret Single Cut Bass
  Artist Line - Will Lee
  21-Fret Vintage M/J Bass
  21-Fret Hybrid P/J Bass
  20-Fret Ultra Vintage Bass
Accessories
- Accessories
- Strings
  - Strings
  - Strings for E-Bass
- Pedals
  
  Pedals
  
  Pedals
  The Sadowsky preamp pedals are based on the active onboard bass electronics that Roger Sadowsky developed himself decades ago. Since then, the legendary circuit has set the tone in all of his basses - highly versatile yet easy to control, powerful and well-balanced in all frequency ranges. The preamp effects pedals bring that sound into a convenient stompbox format for any bass without the Sadowsky electronics.
  
  Sadowsky SBP-1 - Bass Preamp / DI
  Sadowsky SBP-2 - Bass Preamp
- Bags
  
  Bags
  
  Bags
  Roger Sadowsky designed his gig bags for busy New York City musicians who needed to carry their instruments on everything from subways, to busses, cars and even airplanes. Made from amazingly robust materials, these gig bags are unobtrusively streamlined, have cleverly integrated storage spaces and are equipped with many practical features.
  
  Sadowsky Professional Road Bag Genuine Leather Bags, Black
  Sadowsky Professional Road Bag - Electric Bass Gig Bag
  Sadowsky PortaBag Express - Electric Bass Gig Bag
- Straps
  
  Straps
  
  Straps
  We offer a wide range of bass straps to fit your requirements and budget. All of them are comfortable and durable and make a great addition to your bass gear!
  
  Sadowsky Nylon Bass Strap - Black, Gold Embossing
  Sadowsky MasterBuilt Genuine Leather Bass Strap - Brown, Gold Embossing
  Sadowsky Synthetic Leather Bass Strap - Black, Silver Embossing
  Sadowsky MasterBuilt Genuine Leather Bass Strap - Black, Silver Embossing
  Sadowsky MetroLine Genuine Leather Bass Strap - Black, Gold Embossing
  Sadowsky MasterBuilt Genuine Leather Bass Strap - Black, Gold Embossing
  Sadowsky Synthetic Leather Bass Strap with Neoprene Padding - Black, Gold Embossing
  Sadowsky MetroLine Genuine Leather Bass Strap - Black, Silver Embossing
- Parts and Accessories
  - Parts and Accessories
  - Machine Heads
  - Just-A-Nut III
  - Neck Reinforcement Rods
- Pickups and Electronics
  - Pickups and Electronics
  - Electronics
  - Pickups
- Pickups
  - Pickups
  - J-Style Pickups
  - P-Style Pickups
  - P/J Style Pickups
  - Soapbar Pickups
  - M-Style Pickups
- Electronics
- Parts and Tools
  - Parts and Tools
  - Body Parts
    - Body Parts
    - Security Locks
    - Easy Access Compartment
    - Pickguards
    - Control Plates
    - Jack Plates
    - Knobs
    - Bridges
    - Bridge Parts
  - Neck Parts
    - Neck Parts
    - Machine Heads
    - Just-A-Nut III
    - String Retainers
    - Neck Reinforcement Rods
    - Truss Rod Parts
    - Neck Mounting Ferrules
  - Tools
  - Pedal Parts
- Merch
  
  Merch
  
  Merch
  
  Sadowsky Promo - Logo T-Shirt, Black with White Print - Size M
  Sadowsky - White embroidered Logo T-Shirt, Black - Size L
  Sadowsky Promo - Logo T-Shirt, Black with White Print - Size L
  Sadowsky - White embroidered Logo T-Shirt, Black - Size M
  Sadowsky Logo Sticker (Die Cut), White on Black, 153 x 67 mm
  Sadowsky Promo - Logo T-Shirt, Black with White Print - Size S
Artists
Craftsmanship
- Craftsmanship
- MetroExpress & MetroLine Differences
- Roger Sadowsky
- Our Production
News
- News
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- News
- Videos
- Reviews & Press
Support
- Support
- FAQ
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- Downloads & Manuals
- Contact
Buy

Sadowsky Parts - MetroLine & MasterBuilt Volume Pot (A500K) Module for Vintage M-Style Bass

Volume control potentiometer (A500K) for Sadowsky MetroLine & MasterBuilt Vintage M basses. Pre-wired on a PCB (printed circuit board) with connector for easy replacement. Includes nut and washer.

Article Number: SP S ML+MB VOL M

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Similar Products

More Accessories

Sadowsky Strings

Available in sets for 4, 5 and 6-String basses in stainless steel, nickel and flatwound stainless steel.

Sadowsky Bass Preamp Pedals

The same electronics found in every Sadowsky bass for over 30 years, but in a pedal.

Sadowsky Gig Bags

Keep your bass safe and protected at home and on the road with a Sadowsky Gig Bag. Available in genuine leather or nylon.

Sadowsky Pickups

The famous Sadowsky pickups, the perfect upgrade for any bass.

Sadowsky Straps

Nothing can compliment the look of your Sadowsky bass better than a genuine Sadowsky strap. Available in genuine leather, vegan leather and nylon.

It all boils down to good materials, good workmanship, thoughtful design, and the ability to really listen to your clients.

Roger Sadowsky

Sadowsky Craftsmanship