Disclosed is a torsion based tremolo apparatus that includes a moving plate rotatably coupled to a mounting plate. A torsion device imparts torsional force to the moving plate relative to the mounting plate around an axis of rotation. The mounting plate is used to attach the tremolo apparatus to a guitar or other string musical instrument. Adjustable bridge clamps and tuning plates coupled to the moving plate may be used to set the tension on the instrument strings as desired. Rotation of the moving plate relative to the mounting plate alters the tension on the instrument strings.

Disclosed is a torsion based tremolo apparatus that includes a moving plate rotatably coupled to a mounting plate. A torsion device imparts torsional force to the moving plate relative to the mounting plate around an axis of rotation. The mounting plate is used to attach the tremolo apparatus to a guitar or other string musical instrument. Adjustable bridge clamps and tuning plates coupled to the moving plate may be used to set the tension on the instrument strings as desired. Rotation of the moving plate relative to the mounting plate alters the tension on the instrument strings.

Disclosed is a torsion based tremolo apparatus that includes a moving plate rotatably coupled to a mounting plate. A torsion device imparts torsional force to the moving plate relative to the mounting plate around an axis of rotation. The mounting plate is used to attach the tremolo apparatus to a guitar or other string musical instrument. Adjustable bridge clamps and tuning plates coupled to the moving plate may be used to set the tension on the instrument strings as desired. Rotation of the moving plate relative to the mounting plate alters the tension on the instrument strings.

Provided is a modular string instrument including a core string instrument and interchangeable instrument body types. The core including: a core shell forming a basic shape of the core string instrument, a string instrument head, a neck base, a chassis assembly configured to be inserted into the core shell, extending from the head to the neck base and comprising a strings anchoring bridge, a plastic fret board configured to have frets attached thereon, the fret board configured to cover the core shell and to encase the chassis assembly within the core shell, a neck base cover configured to be attached to the neck base, a pickup cassette bay configured to encase an interchangeable pickup cassette, and strings stretched from the bridge over the pickup cassette bay, over the neck base to the head.

A tremolo device for electric guitars including: a) a tremolo mount resiliently mountable on a guitar body adjacent at least one string and the tremolo mount selectively moveable relative to the guitar body; b) a string mount mounted on the tremolo mount in order to receive an end of at least one string of a guitar and the string mount having separate limited movement to the selective movement of the tremolo mount and allow the at least one string to be tunably tensioned; wherein the resilient mounting of the tremolo mount is at least partially decoupled from the tensioned string held by the string mount.

A tremolo device for electric guitars including: a) a tremolo mount resiliently mountable on a guitar body adjacent at least one string and the tremolo mount selectively moveable relative to the guitar body; b) a string mount mounted on the tremolo mount in order to receive an end of at least one string of a guitar and the string mount having separate limited movement to the selective movement of the tremolo mount and allow the at least one string to be tunably tensioned; wherein the resilient mounting of the tremolo mount is at least partially decoupled from the tensioned string held by the string mount.

Embodiments of a quick-release sustain block, and associated guitar tremolo assembly and method, are disclosed. The sustain block extends along a main axis from a distal end to a proximal end. The proximal end is affixable to a bridge plate of the tremolo assembly. Linearly straight string retention bores extend through the sustain block in parallel with the main axis, and have a ball capture segment and a string housing segment. Each ball capture segment is located between the string housing segment and distal end. The string retention bores have a ball detent defined between the ball capture segment and string housing segment. The string retention bores are in communication with a respective string transfer slot laterally thereof. The forward face of the sustain block is configured to be oriented toward a headstock of a guitar when the bridge plate is in pivotable engagement with the guitar.

Embodiments of a quick-release sustain block, and associated guitar tremolo assembly and method, are disclosed. The sustain block extends along a main axis from a distal end to a proximal end. The proximal end is affixable to a bridge plate of the tremolo assembly. Linearly straight string retention bores extend through the sustain block in parallel with the main axis, and have a ball capture segment and a string housing segment. Each ball capture segment is located between the string housing segment and distal end. The string retention bores have a ball detent defined between the ball capture segment and string housing segment. The string retention bores are in communication with a respective string transfer slot laterally thereof. The forward face of the sustain block is configured to be oriented toward a headstock of a guitar when the bridge plate is in pivotable engagement with the guitar.

An electronic vibrato system for a stringed instrument comprises an actuator and microcontroller which are disposed within a chassis. The control arm moves the actuator from a resting position to non-resting, rotated positions. The system is below a face of a stringed instrument such that the system has a disposed fulcrum within the instrument. The rotated positions impart resistive forces on said actuator and imparting control signals. The microcontroller processes said control signal and modulates pitch.

An electronic vibrato system for a stringed instrument comprises an actuator and microcontroller which are disposed within a chassis. The control arm moves the actuator from a resting position to non-resting, rotated positions. The system is below a face of a stringed instrument such that the system has a disposed fulcrum within the instrument. The rotated positions impart resistive forces on said actuator and imparting control signals. The microcontroller processes said control signal and modulates pitch.