Graph Tech PRB-4220-B0 Ratio Bass

Start 360°

Set Of Machine Heads For Electric Basses

Configuration: 4 pieces; 2 x left, 2 x right
Enclosed construction
Each machine head has its own transmission ratio calibrated for the respective string
One full turn of any machine head results in a complete pitch change (+ / -)
Gear ratio per string: E - 36:1, A - 30:1, D - 20:1, G - 18:1
Shaft diameter without mounting sleeve: 8.9 mm
Mounting diameter with mounting sleeve: 13.9 mm
Weight per machine head: approx. 52.62 g
Y-Style Contemporary tuning knobs
Finish: Black

30-Day Money-Back Guarantee

3-Year Thomann Warranty

Available since July 2021

Item number 523541

Sales Unit 1 piece(s)

Colour Black

121 €

All prices incl. VAT

Sales Rank

in 2L/2R Tuning Machines for Bass

This is what customers who viewed this product bought

Gotoh GB707 2L/2R B Bass Tuners

55 €

13%

bought

Schaller M4 90 2L/2R BC Bass Tuners

90 €

bought

Harley Benton Parts Bass Tuners Set Black

26 €

bought

Gotoh GB350 2L/2R B Bass Tuners

95 €

7 Customer ratings

5 7 Customers 4 0 Customers 3 0 Customers 2 0 Customers 1 0 Customers

5 / 5

quality

Review guidelines

6 Reviews

Tuners

D W 16.03.2025

I'm very happy that I decided to install these machine heads. The quality, fabrication, and finish are excellent. They are much easier to use than the original factory tuners. Highly recommendable!

Report

Do you believe this rating to be inaccurate or unacceptable for some reason? Please give us the reason for your assessment in the following text box and – if possible – your e-mail address for further questions.

Excellent Machine Heads

Sillo 09.04.2025

Unbelievably easy to install and very high quality machine heads for bass. I replaced the stock heads on my Gretsch Streamliner Jet Club Bass with these in black and they look great as well as performing their job great. Highly recommended.

Report

good

adrian77 07.03.2023

i replace my warwick originals with these after i change the gaige of strings and original bent.

Report

Show translation

Show original

Unfortunately there was an error. Please try again later.

Macht Sinn

Reiso 01.11.2022

Cool, die Übersetzung ist Klasse nur soweit drehen wie nötig, kein sich ran Tasten und hin und her.

Sehr fein und macht das Stimmen genau und einfacher und schneller

Report

Read all reviews

Graph Tech PRB-4220-B0 Ratio Bass

Set Of Machine Heads For Electric Basses

This is what customers who viewed this product bought

7 Customer ratings

You have to be logged in to rate products.

6 Reviews

Smart Navigator

Served with love!

Graph Tech PRB-4220-B0 Ratio Bass

Set Of Machine Heads For Electric Basses

This is what customers who viewed this product bought

Accessories & matching items

7 Customer ratings

You have to be logged in to rate products.

6 Reviews

Compare options

Smart Navigator