DROP'N'LIFT is a creative semitone transpose effect designed to retune instruments by shifting pitch up or down from one semitone to two octaves. It offers a polyphonic retuning capability suitable for any audio signal, enabling users to drop tune or lift tune with precision. Inspired by classic guitar pedals, this effect transposes input signals in integer half-step intervals, delivering unique pitch-shifting results without traditional smoothing. While its core function focuses on semitone transposition, the device includes a range of additional features that expand its creative potential beyond simple retuning.

The effect operates with two independent tuning lines, Line A and Line B, each capable of transposing the input signal within a range of -24 to +24 semitones. It includes multiple modes such as Dual Tune, Opposed Tune, Pan Tune, Glitch, and Mid/Side Tune, allowing for complex interactions between the two lines. The Dry/Wet control blends the original and processed signals, enabling effects like a 12-string guitar simulation or layered pitch shifts. A Smooth function ensures phase alignment during polyphonic transposition, while the Transpose Resolution parameter lets users adjust delay timing to optimize the effect or create unique slide and delay textures.

Beyond guitar retuning, DROP'N'LIFT serves as a tool for synthesizer octave generation, sub and high harmonic creation, and live note tuning with momentary control via MIDI keys. It supports real-time semitone shifts with expressive momentary bypass capabilities and creative layering options. This effect is intended for musicians and producers seeking innovative ways to manipulate pitch in integer semitone steps, delivering distinctive tonal variations and performance possibilities that differ from conventional pitch-shifters.