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Graph Tech Ratio Machine Heads 3+3 for Electric/Acoustic Guitar - Chrome
Includes GST
Standard shipping Free*
Dispatched in 1–3 business days with tracking, then 4–9 business days depending on location.
Express shipping $15
1–3 business days depending on location.
Flat rate Australia-wide. Choose Express at checkout.
Click & Collect Free
From our Footscray showroom
It’s not on the shop floor yet, so we’ll bring it in and email you when it’s ready (usually 1–3 business days).
Couldn't load pickup availability
Delivery & collection
Standard shipping Free*
Dispatched in 1–3 business days with tracking, then 4–9 business days depending on location.
Express shipping $15
1–3 business days depending on location.
Flat rate Australia-wide. Choose Express at checkout.
Click & Collect Free
From our Footscray showroom
It’s not on the shop floor yet, so we’ll bring it in and email you when it’s ready (usually 1–3 business days).
- ★★★★★ 4.6 from 910+ Google reviews of Scarlett Music (opens in a new tab)
- Returns & warranty
- Price-match promise
- Authorised Graph Tech dealer
Not sure it’s the right one? Talk to a player.
View full detailsDescription
SKU GTR234
The Graph Tech Ratio Machine Heads 3+3 for Electric/Acoustic Guitar in Chrome provide musicians with an innovative solution for precise and reliable tuning. Featuring patented gear technology, these machine heads allow for a unique gear ratio tailored to each string, simplifying the tuning process. With RATIO®, a half-turn equals a semi-tone, ensuring that every string reacts consistently to tuning adjustments.
Key features include:
- Diecast housing with hardened steel gears for durability
- Gear ratios ranging from 12:1 to 39:1 for enhanced tuning precision
- Vintage, tulip-shaped tuning buttons that offer a classic look and comfortable grip
- Includes four different sets of InvisoMatch aluminum mounting plates for easy installation on most guitars
- Sold as singles in a 3-a-side configuration
- Triple chrome plated finish for a sleek and long-lasting appearance
- Peg holes diameter required: 13/32" (10mm)
- String post diameter: 0.236" (6mm)
- String post length to string hole: 0.910” (23mm)
- Weight per single machine head: 0.066lbs (30g)
- Weight per set of six: 0.393lbs (179g)
- Suitable for string diameters up to 72 gauge
These machine heads are ideal for electric guitar players seeking a combination of vintage aesthetics and modern tuning precision, making them an excellent upgrade for both beginners and seasoned musicians. Enjoy enhanced tuning stability and a beautiful finish with Graph Tech Ratio Machine Heads.

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