Categories›Guitars›Graph Tech PRB 4220 B0 Ratio Bass Machine Heads with Y-style knob - 4-string, 2 + 2 - Black
Updated 8 May 2026
| Brand | Graph Tech |
| Category | Guitars |
| Available at | 1 UK stores |
| 90-day avg | £99.00 |
Graph Tech
Graph Tech PRB 4220 B0 Ratio Bass Machine Heads with Y-style knob - 4-string, 2 + 2 - Black
£99.00£118.00↓ 16% offFair Price
Cheapest at Bax · 1 store
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PRICE HISTORY
Current
£102
Change
+8.4%
Avg
£102
Low
£95
High
£108
Volatility
3.1%
PRODUCT DESCRIPTION
- The Graph Tech PRB-4220-B0 Ratio Bass Machine Heads ensure extremely accurate tuning of your 4-string bass guitar. Each tuning mechanism has its own ratio, matched to the string, so one rotation always produces exactly one tone difference. The set consists of four tuning machines (2 left
- 2 right) with a closed construction and Y-Style Contemporary knobs. The black finish gives your bass guitar a sleek, modern look. These tuners combine reliability, stability and smooth operation for the serious bass player.