REVISIONS
| Date | Version | Description |
|---|---|---|
| 2023-11-26 | 3.1 | slight modification to overall level for more output fixed TS mid control is now a trim pot with default where it was set before very subtle gain revision newer higher quality opamps (goodbye TL072) |
| 2024-01-25 | 3.2 | changed the internal charge pump from bipolar 9v to bipolar 15v for improved headroom
This is the last change I see for GRIM for a long time, this thing is dialed! |
SIGNAL PATH
CONTROLS
| Name | Location | Description |
|---|---|---|
| Impedance | Internal (trim) |
The variable impedance buffer is set to 1M by default and won't matter for players using active pickups or buffered pedals in front. There is a significant impact for single coil pickups. Decreasing impedance and loading the down the pickups will attenuate the top end and smooth out the high-end grit. Pushing the impedance (default) the top end and pickup attack are more defined.
Default: 1M |
| Level | External | More on tap than the stock 808. This is your standard volume attenuator that allows you to set from unity or below unity, or crank it up for a boosted signal. |
| Tight | External | Pre-gain high pass to tighten up the low end. |
| LPF | Internal (trim) |
Smooth out the high end of the gain output.
Default: 9/10, Almost fully CW. |
| Low | External | Cut/boost the bass frequencies. |
| High | External | Cut/boost the high frequencies. |
| Blend | External |
Mix between 100% buffered dry signal and 100% wet signal
Full CCW for buffered dry. |
| Clean Boost | Internal (trim) |
Adjust from unity buffer to clean boost on the 100% dry side of the Blend.
Default: 3/4 CW |
| Mid | Internal (trim) |
Adjust the amount of mid hump. This is the classic Tone control and it alters the tone before going into the 2 band EQ.
Default: 8/10 CW |
| Bite | External |
The mid boost control contours the frequency peak from low mids (counterclockwise) to high mids (clockwise).
Start at noon. |
| Gain | External | More on tap than the stock 808. This works in conjunction with the toggle switch. |
| Clip | Internal [DIP] |
Allows for symmetrical LED (high gain punch, compressed)[on,off], Diode Lift / None (clean boost) [off,off] or asymmetrical silicon (dynamic) [off,on] clipping options
Default: Left up (LED), Right down |
| Bypass LED Brightness | Internal |
Adjust overall brightness of front LED.
Default setting at minimum (full CCW). |
9VDC ONLY - CENTER NEGATIVE
This product contains internal circuitry to increase the 9VDC supply to higher voltages for additional headroom.
This product contains THE overvoltage circuit for 9v input only.
CONSUMPTION
41mA
TRUE BYPASS
Soft click (1.1KGf) mechanical 3PDT.
DEMOS
- BJBrian J.Rated 5 out of 5 stars8 months agoA Holy Grail for Amps?
GRIM3 is a ‘sick’ pedal, and in a good way (my demo: https://www.youtube.com/watch?v=yFiQpktvnrE). Think of GRIM3 as a tone sculptor. Find a base tone, but you want it to sound tighter, more aggressive, greater definition, etc., of what you hear in your head. The EQ is basic, with subtle bass & treble controls that help to hone in on a sound after setting the other controls. BITE controls frequency contour from low mids to high mids, increasing note attack. TIGHT controls pre-gain high pass to tame the low end. Combine these two and it's a chugger’s paradise for a modern-metal tone.
BLEND controls how much buffered dry signal is in the mix, versus 100% wet signal (which has more saturation and the nature/quality of the GAIN becomes more noticeable). GAIN ranges from low to moderate, which means you can get very good rock tones when cranked from a clean amp, but certainly works wonders when turned low and combined with a very dirty or hi-gain amp. BLEND is to taste... a more robust sound with more headroom or a more saturated & compressed sound.
GRIM3 is one of those always-on pedals. Cleans sparkle & sound vibrant, whereas dirty tones sound more aggressive & full-bodied. I keep the Gain relatively low while adjusting the BLEND to taste. And this is where the BITE and TIGHT come in, as they hone in on the sparkle and punch brilliantly.
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