S.O.S improves the intonation at each fret and easy installation to your instruments.
We only insert the S.O.S next to the nut between the fingerboard and the strings.
We develop S.O.S. to fit most of major instruments like dreadnought size guitars or classic, etc.
It is designed and based on MTS theory (Patent no. 4383272) and made in Japan.
MTS is an ultimate guitar tuning system based on the laws of physics.
All fretted instruments have fatal problem. That is, when player pressed
the strings at the fret, the string tension is up and tone will be a
little bit sharp, though the frets are set on the correct position.
Inventor, Mr. Minehara researched and derived one formula to calculate
the corrected (offset) value from string material, guitar scale and
string height.
S.O.S. improves the pitch from nut to 12th fret area. If you need to
improve high fret area (over 12th fret), you need to adjust saddle. But
S.O.S. doesn’t cover. You can consider to install custom MTS adjustment.
Sound Offset Spacer
for electric guitars ( nickel string)
fitting scale : 628-650mm