● Live Data
Graph Tech · Guitars
Graph Tech PRB 4220 C0 Ratio Bass Machine Heads with Y-style knob - 4-string, 2 + 2 - Chrome
£110.00Fair Value1 stores tracked
Buy Signal
Price near historical average — neutral outlook
Confidence: 50/100
RSI (14)
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Need 15+ data points
Volatility (ann.)
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Need more data
30d Momentum
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Need 30+ data points
Price Position
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No 90d range data
EMA 20
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EMA 50
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Need 50+ data points
90d Low / High
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30d Forecast
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→ Stable
Product Fundamentals
- 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.
GearDeals Intelligence · Data from 0 historical price points · Analysis is informational only, not financial advice