Old Blood Noise Endeavors Expression Ramper HK

From the X3 to the HK Version: OBNE's Flagship Utility Reinvented

Succeeding the Expression Ramper X3 launched in 2024, the Expression Ramper HK takes the "parameter mover" concept even further. It features graphics by Holey Kids and integrates into the recent OBNE utility series, while adding a dedicated tap tempo that outperforms manual Rate adjustment. The core remains the same: memorizing two expression positions and defining how the pedal moves between them.

For Which Musicians and Uses?

Guitarists, bassists, keyboardists, and sound designers will find an immediate way to breathe life into their effects. Both live and in the studio, the Expression Ramper HK transforms a pitch-shifter into an expressive glissando, a phaser into a stepped filter, or a delay into a controlled feedback rise machine. Compact and simple, it fits anywhere on a pedalboard, alone or in multiples.

Controls, Modes, and Connectivity

Set your A and B points, then choose the trajectory: Triangle for a linear sweep, Square for instant jumps, or 1 Shot for a one-way sweep triggered by foot. Holding TAP while changing the shape grants access to Smooth Random, Sharp Random, and 1 Shot Random variants. Speed is adjusted via the Rate potentiometer or Tap, while the main footswitch starts/stops the LFO or triggers the 1 Shot. The EXP output on a 6.35 mm jack can be configured as TRS, reversed polarity TRS, or TS, all controlled by a 50 k digital potentiometer compatible with most expression inputs. Internal jumpers allow polarity and emulation behavior adjustments.

Sound Character

The Expression Ramper HK does not process the audio signal: it sculpts the movement. As a result, your tone remains intact while targeted parameters come alive. Smooth sweeps, mechanical sequencer-like steps, organic random drifts... the performance becomes more expressive, synchronized to the foot-tapped tempo, and perfectly reproducible.

Technical specifications

Effects	Volume / Expression	Type	sector
Technology	Digital	Use	electric guitar
Format	Pedal	Color	Multicolor

Shapes	Triangle, Square, 1 Shot.	EXP output on 6.35 mm jack, user-configurable	TRS, reversed polarity TRS, or TS.
Hidden shapes	Smooth Random, Sharp Random, 1 Shot Random (accessed by holding TAP and changing shape).	Approximate consumption	~50 mA.