The Old Blood Noise Endeavors Expression Ramper HK is a dynamic utility pedal that reimagines what an expression control can be. Designed to interact with any pedal that accepts external expression input, the Expression Ramper allows you to seamlessly transition between two preset expression values—labeled A and B—either with a single sweep or as an automated LFO. Its compact footprint makes it a powerful addition to any rig where modulation, motion, and control are key.

This version, featuring original artwork by Holey Kids, retains the full suite of controls and internal configuration options. A shape toggle selects between triangle, square, or one-shot motion, while a secondary tap switch reveals three additional random waveform styles. An assignable knob determines the A position, B position, or rate of oscillation. Tap tempo functionality allows manual setting of modulation speed, and the footswitch offers both latching and momentary operation modes.

Internally, the Expression Ramper can be set for TRS, reverse TRS, or TS configurations, and even allows the onboard 50K digital potentiometer to be replaced with a 10K or 100K unit to match a wide range of external gear. The Expression Ramper requires a standard 9V DC power supply and brings evolving control to any expression-enabled device without compromising tone or signal path.