The Smooth Tuner is a style of machine head (a.k.a. tuning peg) installed on a number of Ibanez guitar models. They were produced for Ibanez by Gotoh.[1]

Smooth Tuner gold
Smooth tuner machine heads in gold (SG381 style) Enlarge sprite

The Smooth Tuner have a button shape which is unique to Ibanez and an 18:1 gear ratio.[2]. They were offered with a couple of different styles of tuner body which are similar in design to Gotoh's SG301 or SG381 tuners.[3]

The Smooth Tuner II is a different tuner which was offered concurrently. The primary difference between the two is the button style.


  1. Ibanez tuner guide; Ibanez Collectors World (forum); August 30, 2006; archived from the original October 2018
  2. 1985 USA catalog (page 19)
  3. SG301 product page, Gotoh (manufacturer website), archived from the original January 2018
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