The BL-37 is an experimental reverb pedal from Old Blood Noise Endeavors’ Black Label series, built around variable clock manipulation and internal modulation. By applying modulation at two different points within the reverb trail, the BL-37 creates spacious, drifting reverbs that continuously evolve as you play.

The defining feature is the Clock slider, which reshapes the reverb’s timing and fidelity in real time. Faster settings produce tight, reflective ambiences, while slower clock speeds stretch the reverb into dark, smeared, lo-fi soundscapes that feel abstract and unreal. The result is a reverb that refuses to stay still and rewards exploration.

With its streamlined controls and expressive range, the BL-37 is ideal for ambient players, experimental musicians, and anyone looking for reverb textures beyond conventional spaces.

Highlights:

• Experimental reverb with dual modulation points

• Variable clock control for time and degradation

• Tight echoes to expansive, lo-fi atmospheres

• Simple, hands-on control layout

• Part of OBNE’s Black Label experimental lineup

Power requirement: 9V DC center-negative (not included).

Effects Arcade is an authorized Old Blood Noise Endeavors dealer.
This pedal is new, includes the manufacturer warranty, and ships ready for exploration.