The Oopegg Compressor OCP-1 is an analog compressor pedal from the Japanese maker Oopegg, part of the company's Super Retro Series line of pedals unveiled in April 2022. Delicious Audio's Paolo De Gregorio described it as "an analog compressor pedal that features a circuit inspired by early tube electro-optical units," placing it in the optical-style family of compressors, where light and a photocell handle the gain reduction. It sells for around $245 in the US as of April 20221.
Controls
The OCP-1 carries four knobs, which De Gregorio said "open up a wide range of tonal" possibilities, from subtle consistency to full-on squeeze1:
| Control | What it does |
|---|---|
| Compression | Wide-range control of the dynamics, from subtle evening-out to heavy squeeze1 |
| Attack | Shapes how the compression responds to the front of each note1 |
| Volume | Sets the pedal's output level1 |
| Tone | Unusual in a compressor; shapes the brightness of the compressed signal1 |
The Tone knob is the standout here, being unusual in a compressor. For more on how these pedals work in general, see Compressor Pedals1.
Power, connections and specifications
The pedal runs on a DC 9V supply with a 2.1mm center-pin-negative plug, the standard for most pedal power supplies, or on a 9V battery (006P type). Power consumption is listed at a maximum of 7mAh, a light draw that should sit comfortably on a daisy chain or isolated supply1.
| Specification | Value |
|---|---|
| Input impedance | 1M ohm1 |
| Output impedance | 100K ohm1 |
| Input level | +3dBu1 |
| Terminals | 1/4-inch phone IN, OUT1 |
| Bypass | True bypass1 |
| Accessory | OOPEGG TOP HAT mini, red, x 11 |
Background
The OCP-1 is Oopegg's compressor pedal, and it sells for around $245 in the US1. Its published specifications include a maximum input level of +3dBu and a power consumption of max 7mAh1. Players curious about how a compressor shapes their sound can compare it against other Fuzz Pedals and Reverb Pedals when building a board around it.
Videos
OOPEGG
Joey Noble
Questions
Can the Oopegg OCP-1 run on a 9V battery?
Yes. The pedal runs on a DC 9V supply with a 2.1mm center-pin-negative plug, or on a 9V battery (006P type). Power consumption is listed at a maximum of 7mAh, which is a light load for a pedalboard power supply.
Is the Oopegg OCP-1 true bypass?
Yes, the OCP-1 is true bypass, so when the pedal is off your guitar's signal passes straight through without the compressor's circuitry in the path.
Where is the Oopegg OCP-1 made?
The OCP-1 is hand-made in Japan. Oopegg is described as a high-end Japanese guitar maker, and the compressor was unveiled in April 2022 as part of the company's Super Retro Series line of pedals.
What does the tone knob do on a compressor?
A tone knob is unusual on a compressor. On the OCP-1 it sits alongside the Compression, Attack and Volume knobs and lets you shape the brightness of the compressed signal, which is handy because heavy compression can dull the top end of a guitar's sound.
How big is the Oopegg OCP-1?
The body measures 65mm wide by 122mm deep by 40mm high, and the pedal weighs 280 grams, so it takes up a modest amount of room on a pedalboard.
What power polarity does the OCP-1 need?
The OCP-1 needs a DC 9V supply with a 2.1mm center-pin-negative plug, the standard polarity used by most pedal power supplies. It can alternatively run on a 9V battery.
Sources (1)
- New Pedal: Oopegg Compressor OCP-1, Delicious Audio, 2022-04-08


