Categories›Guitars›Graph Tech PRB 4220 C0 Ratio Bass Machine Heads with Y-style knob - 4-string, 2 + 2 - Chrome
Updated 11 May 2026
| Brand | Graph Tech |
| Category | Guitars |
| Available at | 1 UK stores |
| 90-day avg | £107.50 |
Graph Tech
Graph Tech PRB 4220 C0 Ratio Bass Machine Heads with Y-style knob - 4-string, 2 + 2 - Chrome
£107.00£118.00↓ 9% offFair Price
Cheapest at Bax · 1 store
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PRICE HISTORY
Current
£108
Change
+13.7%
Avg
£97
Low
£91
High
£108
Volatility
3.8%
PRODUCT DESCRIPTION
- Graph Tech PRB-4220-C0 Ratio tuning machines are specially designed for 4-string basses with a 2L/2R configuration. Thanks to the unique Ratio technology, each string gets its own transmission, making tuning more accurate and consistent. So you always achieve exactly one whole tone with one stroke, regardless of the string. The closed construction ensures durability, while the Y-Style knobs and chrome finish offer a modern look. With solid build quality and precise tuning, this is the perfect upgrade for any bass player who wants more stability and ease of tuning.