The Ohcidy Overdrive is a hand-built analog overdrive from Amp Fx, and the maker's own description gets straight to the point: it is meant to sound like an amplifier, not a pedal. RockBoard's PedalPedia describes it as an overdrive that sounds much more like an amp than a pedal, and says that if you did not look at it, you would only hear a wide-open tube amp in the style of a Marshall JTM45, with that amp's typical warm and soft power amp distortion1.
What it does to your sound
Amp Fx positions the Ohcidy as an "amp-in-a-box" pedal, meaning a drive circuit built to reproduce the basic character of an amplifier and guitar rather than impose a strong color of its own. In the maker's words, it offers "authentic reproduction of the basic character of amp and guitar and without a drastic sound of its own"1. For a player, that framing suggests the pedal is intended to push an amp-style breakup into the signal while leaving the guitar's own voice recognizable, in the same family as other amp-style drives you can compare with distortion pedals and boost pedals.
The reference point Amp Fx names is the Marshall JTM45. RockBoard's PedalPedia says the pedal delivers the sound of a wide-open JTM45, including its warm and soft power amp distortion1.
"An overdrive that sounds much more like an amp than a pedal."
Build and power
The Ohcidy is hand-built, which Amp Fx presents as "a new, hand-built marvel of amp-fx engineering"1. It runs on a standard 9V DC, center-negative supply and draws 8mA, a light load that fits easily on a typical pedalboard power supply1.
Amp Fx gives the pedal a second name. On the product page the maker writes, "I call it Ohcidy or rather Obertonfabrik"1. Obertonfabrik is German for "overtone factory," and both names refer to the same pedal.
Demo
A demo video by Sean Pierce Johnson is linked from the maker's product page1.
Questions
Is the Amp Fx Ohcidy Overdrive analog?
Yes. Amp Fx lists the Ohcidy Overdrive as an analog circuit on its product page. It is also described as hand-built, which places it among small-batch amp-style overdrives rather than mass-produced digital or analog-drive pedals.
What power supply does the Ohcidy Overdrive need?
The Ohcidy Overdrive runs on a 9V DC supply with a center-negative plug, the same standard used by most pedalboard power supplies. Amp Fx lists its current draw at 8mA, so it sits comfortably alongside typical pedals on a shared supply.
Why is the Ohcidy also called Obertonfabrik?
Amp Fx itself gives the pedal a second name: on the product page the maker writes, 'I call it Ohcidy or rather Obertonfabrik.' Obertonfabrik is German for overtone factory, which points to the pedal's purpose of adding amp-like harmonic content rather than a strong color of its own.
What does amp-in-a-box mean for an overdrive pedal?
Amp-in-a-box describes an overdrive built to reproduce the character of a particular amplifier in a pedal. Amp Fx describes the Ohcidy as an amp-in-a-box with authentic reproduction of the basic character of amp and guitar, without a drastic sound of its own, so your guitar and amp still come through.
How much current does the Ohcidy Overdrive draw?
Amp Fx lists the Ohcidy Overdrive's current draw at 8mA on 9V DC. That is a light load by pedal standards, so it should not strain a standard pedalboard power supply.
Sources (1)
- Ohcidy Overdrive by Amp Fx, RockBoard PedalPedia, 2026