SKU: 28292220506
blue monarch pedal

blue monarch pedal Prussian Blue Reverb Revival 15th Anniversary (OC-PBR-15th) – One Control USA

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Description

blue monarch pedal Prussian Blue Reverb Revival 15th Anniversary (OC-PBR-15th) – One Control USAProduct Overview: The Prussian Blue Reverb Revival is a limited edition pedal commemorating the 15th anniversary of One Control. It reissues the original design of the acclaimed Prussian Blue Reverb, developed by legendary designer Bjorn Juhl. This pedal was created to offer the most natural and expressive reverb tone possible, specifically tailored for guitar and bass. What Is the Prussian Blue Reverb? Reverb is the gentle echo produced when sound

 

Product Overview:

The Prussian Blue Reverb Revival is a limited edition pedal commemorating the 15th anniversary of One Control. It reissues the original design of the acclaimed Prussian Blue Reverb, developed by legendary designer Bjorn Juhl. This pedal was created to offer the most natural and expressive reverb tone possible, specifically tailored for guitar and bass.

 

What Is the Prussian Blue Reverb?

Reverb is the gentle echo produced when sound travels through space. Every instrument, whether electric, acoustic, or electronic creates this natural effect before sound reaches our ears. The Prussian Blue Reverb is designed to replicate this ideal echo with clarity, subtlety, and spatial depth.

Unlike traditional reverb types like spring, hall, or room, the Prussian Blue Reverb creates a balanced tone that combines the best elements of each. It delivers a sound that feels alive, three-dimensional, and naturally integrated with your playing.

Rather than imitating classic reverb units, this pedal uses a custom algorithm designed by BJF to respond directly to guitar and bass performance. It avoids harshness and artificial coloration, allowing the instrument’s character to shine through.

 

Key Features:

Reverb pedal with an original design by Bjorn Juhl

Deep, natural, three-dimensional spatial diffusion

Precisely tuned DECAY control that blends naturally with your playing

KILL DRY switch for use in parallel effect loops

Twenty-four-bit high-quality digital reverb processing

Analog dry-through circuit for pure signal path

Compact, durable aluminum mini enclosure

Battery or external power supply compatible

 

Controls:

LEVEL: adjusts the volume of the reverb effect

TONE: adjusts the brightness of the reverb

DECAY: controls the duration of the reverb from two milliseconds to two seconds

KILL DRY: mutes the dry signal for parallel routing or creative effects

The DECAY control is specially designed to shape the reverb’s presence without interfering with the rhythmic clarity of your performance. This makes it ideal for both subtle ambience and long, immersive trails.

 

Sound Design and Technology:

The Prussian Blue Reverb’s algorithm uses random modulation to replicate the natural decay and diffusion of string instruments. This method creates a reverb that feels spacious, musical, and lifelike without sounding artificial or distracting.

The early reflections are short, ensuring the reverb responds quickly to your playing while maintaining a natural decay. This results in an immersive experience that expands the sound without overwhelming it.

Its wide dynamic range, about five times greater than traditional spring reverbs, ensures clarity across all frequencies, especially on bass instruments. Filtering prevents excessive treble or muddiness, keeping your tone open and clear.

 

Technical Specifications:

Input impedance: 500 K ohms

Output impedance: 2 K ohms

Operating voltage: 8 - 12 volts

Current consumption: 32 milliamps

Signal to noise ratio: -96 decibels

Dimensions without protrusions (W x D x H) : 39 mm x 100 mm x 31 mm

Dimensions with protrusions (W x D x H) : 47 mm x 100 mm x 48 mm

Weight: approximately 160 grams (200 grams when the battery is inserted)

True bypass switching

Power options: 9V center minus adapter or 9V battery

Controls: LEVEL, TONE, DECAY, KILL DRY

*Adapter and Battery not included

 

Power-On Note

Upon powering the unit, allow a few seconds for the internal digital chip to stabilize. During this time, the sound may not be stable. For best performance, wait a few moments in bypass mode after connecting the adapter or battery.

 

Recommended Useage:

The Prussian Blue Reverb was designed specifically for guitar and bass, but it also works beautifully with acoustic instruments and electronic setups. It is particularly effective when placed after distortion effects and before modulation like tremolo. Its ability to stay on at all times makes it a versatile part of any signal chain, from subtle ambiance to spacious soundscapes.

 

Final Thoughts from the Designer:

When developing the reverb effect, I focused on the type of reverb guitarists actually want. In many cases, players desire a tone that lies somewhere between spring and hall reverb, rich but not overpowering, ambient but clear.

That is why I created an accurate DECAY control that can be adjusted to avoid interfering with rhythm, while still providing depth and texture. I had high hopes, but even I was surprised when I first heard the final sound of the Prussian Blue Reverb. It feels like there is a vast space hidden inside this small pedal.

Because it is built specifically for guitars and basses, it suits not only electric instruments but acoustic ones as well. One of my favorite setups is running the PBR after distortion and before tremolo because it sounds absolutely incredible.

─── Bjorn Juhl

 

Prussian Blue Reverb Revival 15th Anniversary Manual.pdf

 

Promotional Pictures(for dealers)
2000pix×2000pix 350dpi

 

Shipping Notes
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SKU: 28292220506

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Steve in Florida
Fort Morgan, US
★★★★★ 5
Awesome chair definitely recommend
Color: Blue, Color: Blue
It was amazing the color was spot on and it was very very easy to put together and the size is amazing for my 11 year old daughter maybe not for an older person it doesn’t recline as much as it says so if you want a reclining chair maybe I don’t recommend this chair but the quality is amazing and the adjustment capability is incredible the noise level is at 0 it is an amazing chair we just got it so I don’t know so much about the dupability so if you want this chair for a child or a tween maybe even a teen easy to put together beautiful blue color this is the chair for you.
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Reviewed in the United States on March 21, 2026
R
Verified Purchase
Rocky hardcore
Belleville, US
★★★★★ 5
Easy instructions, comfortable cushions
Color: Pink
I just put it together and I love it!!! It's so comfortable and it was easy to put together. You can rock it back and forth which helps your back. The seat is very wide and the cushion is thick. Pink is my favorite color, and this chair satisfies my pink obsession.
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Reviewed in the United States on May 16, 2026
L
Verified Purchase
LA Living
Massapequa, US
★★★★★ 5
Wonderful chair
Color: Dark Black
I bought this office chair as a sewing tool, you might say. I felt that having an office chair on wheels would get me from the sewing machine to the ironing board and then to the cutting board and back to the sewing machine. I was having to get up and down to get around to all these places before and this saves me so much time and effort. I’m 71 so when the box came I was hesitant to try to bust into it and put it together but it went together so easily. It’s very comfortable and the lumbar support feels great on my low back. When I first sat down after the assembly process, the chair cushion tipped down in the front but after contacting the support team I was advised to tighten the tilt tension located under the chair and that fixed me right up! All and all, my chair is the perfect addition to my sewing area at a very affordable price. I couldn’t be happier!
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Reviewed in the United States on December 31, 2024
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SP
Fort Morgan, US
★★★★★ 4
Comfortable, affordable, and great for small spaces!
Color: Light Purple, Color: Light Purple
I had previously left a review of two stars, but have since deleted that review after I've owned the chair for a few weeks now. Initially, I stated the chair was uncomfortable and not cushioned at all. But this issue quickly resolved after sitting it for a longer time, it seems the cushion molds to you. So it may be uncomfortable the first few times sitting on it, but it eventually softens. The cushion is now soft yet sturdy. You don't sink in too much, but it's comfortable for sitting for long periods of time. I personally enjoy the mesh back as well, it supports my lower back and doesn't cause back pain. Normally I have to use a cushion of my own to support my lower back for most chairs, but this one actually supports me in a way that doesn't require an extra cushion - so that's really nice. The chair is fairly on the smaller end, which is perfect for low desks or tight spaces, which is exactly what I wanted. The height can be adjusted, but even at the highest setting, it is still fairly low. Keep that in mind - it may not be super comfortable for those over 6 ft. The arms flip up which makes storing it under a low desk very easy. The cushion is thick and very accurate to the picture. I love that it is lightweight and doesn't make much noise when rolling the chair. It also feels very sturdy. Some of the reviews say it feels flimsy, and I don't know if some are just assembling it incorrectly, because for me this thing is very strong and holds up quite nicely under my weight. Overall, this is exactly what I wanted for my personal living space. A chair that's not too bulky, but comfortable enough to sit in for long hours. It functions as advertised for this purpose. One final thing -- the color selection is gorgeous. I bought the light purple color and it fits my setup nicely! Color was accurate to the picture, and looks very cute and adorable in my space.
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Reviewed in the United States on December 21, 2025
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Verified Purchase
Christine Franzone
San Leandro, US
★★★★★ 5
Exteremly comfortable
Color: Dark Black
Reasonably priced, very comfortable l, easy assembly
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Reviewed in the United States on May 24, 2026

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