MXR did a great service to us pedal nerds by bringing Paul Cochrane’s Timmy circuit to the masses. It gets described as a transparent overdrive, which is technically true, but that undersells it. The EQ section is powerful enough to reshape your tone significantly, and the way it responds across the full gain range feels organic and musical rather than surgical. You can coax a lot of different sounds out of this tiny pedal: cleanish boost, fuzzy drive, edge of breakup, or just a touch of sparkle to cut through a mix.
The panel reads top to bottom. At the very top sits the three-way Clip toggle, centered between the two knob rows. Below that, the left column holds Bass and Volume; the right column holds Gain and Treble. That layout matters because Bass and Treble work differently from most drives: Bass cuts the low end before the gain stage, and Treble cuts the high end after it. Both are cut-only controls, so turning them up does not add anything but opens the circuit up by removing less. The Gain knob drives the LF353 op-amp, and the Volume sets the output level independently.
In the demo above I’ve set up sweeps for Gain, Bass, Treble, and the Clip toggle, so you can hear what each one does to the same riff.
The three main presets cover the Timmy’s range well. Gentle Presence (gain at 7, bass at 2, treble at 7, clip position 1) keeps things bright and present without getting shrill. Smooth Clarity (gain at 5, bass at 0, treble at 8, clip position 1) is a cleaner, more open setting with the treble cut eased off for extra air. Fuzzy Drive pushes the gain to 10 with clip position 2 for heavier saturation, which shows how far into grit this circuit can go. Slight Compression (gain at 4, clip position 3) pulls things back to a softer, lightly squeezed feel, just as the name suggests. The Clip sweep in the demo makes the difference between the three positions easy to hear at a fixed gain of 8.
The EarthQuaker Devices Plumes is the obvious comparison pedal in this same corner of the overdrive market. The Plumes is a TS-family design, which means it pushes mids into the signal. That mid-hump is what makes a Tube Screamer feel thick and warm in a band mix, but it also changes the character of your tone rather than just adding drive. The Timmy goes the other direction: the cut-only Bass and Treble controls let you trim what you don’t want without injecting anything new. If your amp and guitar already have a midrange you like, the Timmy leaves it alone. The Plumes, by contrast, can work that mid-hump to your advantage, particularly for cutting through on a single coil guitar through a loud band. Neither is wrong; they solve different problems. The Timmy gives you more tonal control at the cost of the Plumes’ simplicity, and the Plumes gives you that classic chewy compression the Timmy deliberately avoids.
There’s also a side by side page for this one: MXR Classic 108 Fuzz vs MXR Timmy Overdrive, both pedals on the same loop so you can switch between them mid-phrase.
Players who want overdrive that doesn’t fight their amp’s natural voice will get the most out of the Timmy. It works especially well as a pedal platform for players who already have a dialed-in base tone and just want to add drive or gain staging. The three Clip positions mean you can adjust the saturation character without touching the knobs, which is useful for switching between a soft rhythm push and a heavier lead voice. The honest caveat: if you’re looking for a pedal that adds warmth and body on its own, the cut-only EQ means the Timmy isn’t going to do that for you. It reveals your rig rather than flattering it.
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