Designed specifically for bass guitar, the EarthQuaker Devices Blumes Jr MOSFET Mod Low Signal Shredder bass overdrive pedal delivers deep low-end response and a tighter, more focused drive voice. This compact variation builds on the original Blumes circuit, which doubles the gain of the Plumes design and extends its bass response, while introducing a new MOSFET clipping option for harmonically rich breakup. Three selectable modes let bassists move between the original Blumes' familiar drive characteristics and the more aggressive response of the MOSFET setting. Straightforward Level, Gain and Tone controls provide additional flexibility for shaping the sound, while the smaller enclosure helps conserve pedalboard space. Built in Akron, Ohio, the Blumes Jr MOSFET Mod brings the bass-focused character of the original into a compact design with an additional clipping voice.

Bass-Focused Voicing Keeps Low Notes Present

The Blumes Jr builds on the original Blumes circuit, which modifies the Plumes design with twice the gain and a deeper bass response specifically suited to bass guitar. At lower Gain settings, the pedal delivers crunchy breakup that adds character to bass lines without requiring heavily saturated tones. Turn the control past noon, and the drive becomes more pronounced, opening up aggressive overdrive sounds for heavier passages. The circuit's extended low-frequency response helps preserve the weight of lower notes as the gain increases, making it suitable for bassists who want additional grit without abandoning the instrument's fundamental character.

Three Drive and Boost Modes Offer Distinct Textures

The three-way selector retains two familiar Blumes settings alongside the new MOSFET modification. Mode L uses LED clipping for a crunchy drive response, while mode N removes the clipping diodes for an unclipped op-amp voice that can function as a boost at lower Gain settings. Mode M introduces MOSFET clipping, delivering tighter, more focused overdrive with rich harmonics and the bite of a modern high-gain tube amp. These contrasting modes let bassists move between the original Blumes' familiar sounds and the more aggressive MOSFET setting, providing different gain characteristics for rhythm parts, melodic lines and heavier bass passages.

Compact Design and Simple Controls Fit Your Rig

The Blumes Jr keeps sound shaping straightforward through its Level, Gain and Tone controls. Gain adjusts the amount of drive, while Tone shapes the balance between low-frequency fullness and high-frequency bite. Level manages the pedal's output, helping players set an appropriate signal level for their amplifier or effects chain. The smaller enclosure also conserves space on crowded pedalboards while retaining three selectable clipping modes. Built in Akron, Ohio, the EarthQuaker Devices Blumes Jr MOSFET Mod Low Signal Shredder bass overdrive pedal combines the original Blumes' bass-focused voicing with a new MOSFET drive option in a compact format.