The HQ-J is a non-floating tremolo in the style of a Fender Strat or traditional Wilkinson tremolo. The strings are loaded through the tremolo block which simplifies the string change process. It has a low profile to minimize interference with the players hands. It is generally used in conjunction with locking tuning machines to enhance tuning stability when the tremolo is used. The HQ-J appeared on a few early S series guitar models including the 430SII and the 440SII.