What it is
The classic vintage overdrive voice has always fascinated me — creamy, smooth, warm and extremely versatile. Circuits are like recipes, and the same recipe can taste different even with identical ingredients. This one is my recipe: I chose the JRC4558D IC chip for its character, made my own decisions everywhere else, and wired the whole thing true bypass.
This is the most iconic flavour there is in overdrive, and the jalapeño is the most iconic pepper in the world. It was the perfect match to describe the flavour of this circuit. That’s how the Jalapeño Screamer was born.
Where it sits in the family
Every Jalapeño Screamer carries the same three control names: loud, ripe and rage. The table below is what Rolf has actually written down about how the versions differ. If something isn’t in it, it isn’t documented — which is not the same thing as saying the pedals are identical.
| Version | Clipping | What Rolf says is different |
|---|---|---|
| Vintage | not documented | Rolf’s own vintage overdrive voicing, built around the JRC4558D IC chip, with true bypass |
| Amarillo | 1N34A germanium diodes | Soft, rounded clipping — smoother breakup, richer harmonics, a more open, amp-like response. Very limited batches |
| Rojo | Red LEDs | High gain. More headroom, more output, sharper attack, cutting upper midrange, less compression |
There is also a Verde in the family. Rolf’s own summary of the range: “If the Verde is smooth and the Amarillo is dynamic, the Rojo is loud, aggressive, and unapologetically rude.”
Controls
Three knobs — rage, ripe and loud — plus one footswitch. No toggle switches.
| Control | What it does |
|---|---|
| rage | Dials in the gain level, moving from a warm overdrive to a raging distortion. |
| ripe | Shapes the midrange and bass response, letting you dial in a thicker, juicier tone. |
| loud | Adjusts the overall output level — from a spicy boost to full-blown speaker-blasting volume. |
The footswitch engages and bypasses the effect.
Hooking it up
- Guitar (or whatever comes before it in the chain) into the input jack, output jack to your amp or the next pedal. The jacks aren’t labelled with words, they’re marked with symbols: the one marked ∧ is the output — that’s the one that goes on to your amp or to the next pedal — and the one marked ∨ is the input, where your guitar plugs in.
- Power: 9V DC, 2.1 mm barrel plug, center negative. It’s the same adapter that runs every other Spicy Pedals pedal.
- Do not use a supply with a higher voltage rating — it can damage the pedal.
- When the pedal isn’t in use, unplug the power. It’s easier on the components.
Getting the most out of it
- The classic starting point: rage low, ripe around the middle, loud set so the pedal is a little louder than your bypassed sound. That’s a Screamer doing what a Screamer does — pushing the front of the amp rather than making its own distortion.
- Set the gain before the volume. Find the amount of dirt with rage first, then rebalance loud. Doing it the other way round means chasing your own tail.
- ripe is where you fit it to your amp, not where you fix your guitar. It’s the tone control; move it in small steps.
- Stack it. It pairs well before or after a fuzz or a clean boost — put a boost in front of it and it turbo-drives; put it after a fuzz and it tightens things up. Try both orders, they don’t sound the same.
- Works with single coils and humbuckers alike.
Specifications
| Type | Vintage overdrive |
| Circuit | Rolf’s own vintage overdrive design |
| IC chip | JRC4558D |
| Controls | Three knobs: rage, ripe, loud |
| Switches | None |
| Switching | True bypass |
| Power | 9V DC, 2.1 mm barrel, center negative |
| Built | Designed, hand-assembled and hand-wired in Dallas, Texas |
Current draw: not yet measured on this unit, so no figure is published for it here. As a practical guide, analogue overdrives of this kind draw very little — they are among the most frugal things you can put on a pedalboard — so any standard 9 V DC supply rated 100 mA or more has ample headroom for it, on its own or shared with the rest of your board. Treat that as guidance rather than a measurement of your pedal: what this one actually pulls depends on its LED, on the components fitted and on how the unit is built. What does have to be exact is the voltage — 9 V DC, center negative, and never higher.
Care
- Keep it away from dust and moisture.
- Check the jack nuts and the footswitch nut now and then and tighten them if they’ve worked loose.
- Avoid extreme temperatures — don’t leave it in the car in a Texas summer.
- Unplug the power when it’s not in use.
Warranty and support
Five-year warranty against manufacturing defects, to the original buyer.
If something isn’t right with your pedal, get in touch. Spicy Pedals is a one-man shop, so the person who answers is the person who built your pedal.
Individually assembled by hand in Dallas, Texas, personally by Rolf.