One Control Mosquito Blender Trail with BJF Buffer

The One Control Mosquito Blender Trail with BJF Buffer is a wet/dry blender pedal: it sends your dry guitar signal straight through while routing a copy out to an effects loop, then lets you set how much of each you hear. One Control describes it as adding "a wet/dry control to any effects pedal or loop," with individual control over the WET and DRY signals so you can fine tune your tone¹. It also carries the BJF Buffer circuit, which can be switched on or off.

This is the kind of pedal a player reaches for when they want to keep their core clean tone underneath a driven or modulated effect, rather than letting the effect take over completely. It is currently listed as sold out at One Control's US store, at a regular price of $194.99 USD, shown at $243.99 USD as the sale price on the page¹.

What it does and how it works

The pedal sits between your guitar and the rest of your rig. Your input signal passes through as the DRY path, and the SEND jack feeds an external pedal or loop whose output returns through the RETURN jack as the WET path. Two knobs set the balance: DRY adjusts the volume of the dry, input signal in a range of 0 to 100%, and WET adjusts the volume of the wet, effect-loop signal over the same range¹. Set the WET low and DRY high and you get your clean tone with a touch of the looped effect layered on top; set DRY to zero and the looped effect is all you hear.

The BJF Buffer circuit is built in and optional. One Control calls it "the legendary BJF Buffer circuit (optional on/off)"¹. A buffer like this keeps the high end of your signal intact over long cable runs; players who prefer a fully passive path, or who run a fuzz pedal that dislikes buffers in front of it, can switch it off. See buffer pedals for how buffers work and how they compare.

Controls

The TRAIL switch is the feature that gives this version its name. With it on, the signal returning from the RETURN jack keeps being mixed into your output even after you bypass the blender, so effects like reverb and delay trail off naturally instead of stopping dead, while the SEND signal is cut so no new audio feeds the loop¹. That is the behavior players usually want from time-based effects: the tails of a delay or reverb decay on their own when you switch the effect out.

The PHASE switch reverses the polarity of the signal¹. Some pedals in a loop invert phase, and when an inverted wet signal is blended against the dry signal the two can cancel, thinning the sound. Flipping the polarity restores the blend. One Control's guidance on the sibling Expression model is to set the polarity switch "to the one closer to the required tone while listening"².

Power and size

The pedal draws 12 mA¹, a light load that leaves plenty of headroom on an isolated supply. It measures 94 mm long, 48 mm wide and 35 mm high, and weighs 230 g¹, a small box that fits easily onto a crowded board.

The Mosquito Blender Expression version

One Control also makes the One Control Minimal Series Mosquito Blender Expressio with BJF Buffer, a clean blend pedal with expression control and a buffer². The two share the blend concept and the BJF Buffer, but the Expression version is built around remote control: when an expression pedal is connected to its EXP terminal, the 0 to 100% blend knob can be operated with the expression pedal². It also adds a MASTER control that adjusts overall volume and can boost the sound, which One Control says can suppress sudden volume changes during effect blending for stable operation².

In short, the Trail version is the smaller, simpler box aimed at players who want a set-and-forget parallel loop with natural bypass tails, while the Expression version is for players who want to ride the blend with their foot and level the output with a MASTER control¹².

One Control also fits the BJF Buffer into other utility pedals, including the One Control LX Tuner with BJF Buffer and the One Control Minimal Series BJF Buffer as a standalone buffer.

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