Tuner

    Schaller Schaller M6 Locking Tuners, 3+3

    Schaller's compact locking tuner, a common upgrade for improving tuning stability on PRS-style and other 3-per-side guitars.

    6 guitars checked: 6 likely drop-in.

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    Where to buy

    Reverb

    See current price at Reverb

    Being re-verified

    View at Reverb

    Part specs

    Tuner hole size

    10mm

    Confirmed

    Mounting pattern

    2-pin mount plus a single rear mounting screw (current M6 Pin design), confirmed via Schaller's own manufacturer spec sheet

    Confirmed

    Gear ratio

    18:1

    Confirmed

    Installation notes

    Confirmed via direct PRS forum owner reports as fitting the SE without reaming, used specifically to address the SE's known tuning-stability complaints.

    Guitars we've checked

    6 guitars checked: 6 likely drop-in.

    Music Man John Petrucci Majesty

    Music Man

    John Petrucci Majesty 2022

    Likely drop-in

    Matches the tuner family already on this guitar. A straightforward like-for-like swap.

    Why we say this

    This guitar ships with Schaller M6-IND locking tuners already, so the standard Schaller M6 line is a direct like-for-like replacement.

    PRS CE 24

    PRS

    CE 24 2023

    Likely drop-in

    A common fix for tuning stability on this guitar. Owners report these go in without any drilling.

    Why we say this

    Confirmed via direct PRS forum owner reports as fitting the SE/CE tier without reaming, used specifically to address the known tuning-stability complaints across this hardware family.

    PRS SE Custom 24

    PRS

    SE Custom 24 2023

    Likely drop-in

    A common fix for tuning stability on this guitar. Owners report these go in without any drilling.

    Why we say this

    Confirmed via direct PRS forum owner reports as fitting the SE without reaming.

    PRS SE Custom 24 Left-Handed

    PRS

    SE Custom 24 Left-Handed

    Likely drop-in

    A common fix for tuning stability on this guitar. Owners report these go in without any drilling, and this style of tuner works the same for left and right-handed guitars.

    Why we say this

    Confirmed via direct PRS forum owner reports as fitting the SE without reaming. This is a 3-per-side headstock, and standard 3-per-side tuner sets are not handedness-specific the way 6-in-line sets are, so this is not expected to carry a different result than the right-handed version.

    PRS SE David Grissom Tremolo Signature

    PRS

    SE David Grissom Tremolo Signature 2023

    Likely drop-in

    A common fix for tuning stability on SE-tier PRS guitars. Owners report these go in without any drilling.

    Why we say this

    Confirmed via PRS forum owner reports as fitting the SE tier without reaming.

    PRS SE Standard 24

    PRS

    SE Standard 24 2024

    Likely drop-in

    A common fix for tuning stability on SE-tier PRS guitars. Owners report these go in without any drilling.

    Why we say this

    Confirmed via PRS forum owner reports as fitting the SE tier without reaming, the standard fix for SE tuning-stability complaints.

    Help improve this data

    Nothing is flagged as an open question here right now. If you have fitted something to this Schaller M6 Locking Tuners, 3+3 that we haven't covered, send it in.