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Digital data of a world-renowned Japanese-made machine is now available for download.

[Legend in one] Crazy Tube Circuits Unobtanium Klon x Dumble dual overdrive [Sound demo and reviews]

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Sending Japan's finest tone to the world

  • DIGITAL CAPTURES
    Archiving Japanese boutique pedals and world-renowned equipment in studio quality (Quad Cortex & TONEX)
  • THE GEAR
    Try it digitally first, and if you really like it, go for the actual device.
    *Limited to those outside of Japan
  • THE VINYL
    A selection of Japanese analog sounds, including anime and fusion music.

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"Klon and Dumble, two legendary tones in one"
What if such a dream effector actually existed?

A boutique brand from Greece.Crazy Tube CircuitsSent out by

Crazy Tube Circuits Unobtanium

This is a high-quality, multi-functional "dual overdrive" that combines the clean, powerful overdrive of the Klon Centaur series with the rich, complex tone of a Dumble series amp in one unit.

  • "There are a lot of Klon and Dumble types out there, but what makes Unobtanium different?"
  • "It's expensive, but is it worth it?"
  • "I'm not sure if I can use it properly... is it okay for beginners?"

I'm sure there are many people who have the same concerns.

In this article,A thorough explanation of Unobtanium's basic specifications, sound characteristics, differences from other overdrives, and actual user reviews and reputations. international success.

Crazy Tube Circuits
62,900 JPY(TAX+) (As of 2023:06 on March 13, 22 | According to Yahoo Shopping)
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Please use Sound House again next time.

Crazy Tube Circuits Unobtanium | Specifications and Features

Crazy Tube Circuits Unobtanium Basics

Effector NameUnobtanium
BrandCrazy Tube Circuits
CategoriesOver drive
Specification.Power supply: 9V DC (center negative), internally boosted to 18V
Current consumption: 100mA
Dimensions: 120mm (width) x 95mm (depth) x 50mm (height)
Weight: Approx. 500g
Two legendary sounds in one

Unobtanium recreates the sound of a Klon Centaur amplifier on the right channel and a Dumble amplifier on the left channel, delivering a wide range of tones from transparent boost to lush overdrive.

Flexible sound creation

Each channel can be used independently, and can also be connected in series to create a wide range of sounds. It also has an effects loop, so you can add other pedals to expand your sound creation possibilities.

High quality components and design

The high-quality components inside ensure excellent performance in terms of both durability and sound quality. ​In addition, the internal 18V boost ensures headroom and delivers clear, dynamic sound.

Crazy Tube Circuits Unobtanium | Sound demo

Crazy Tube Circuits Unobtanium | Review and reputation

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Positive reviews
  • The Unobtanium is the perfect pedal for getting that Dumble style tone you've been looking for, especially the glassy clean tones in Steel String Singer mode.
  • Even at low gain it's very clear with lots of sustain and harmonics. I've tried it with a variety of amplifiers and the results are great.
  • It's a great pedal that gives you the sound of both the Dumble and the Klon in one. Each section sounds great on its own or in combination.

Negative reputation

Negative reviews
  • I felt I could get the same sound with two Tube Screamers or any other overdrive pedal.
  • The high price makes some people hesitate to purchase it.

Crazy Tube Circuits Unobtanium|Recommended for:

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  • "I was interested in both Klon and Dumble, but if it was all in one device..."
    The Klon Centaur is an excellent booster, while the Dumble series is a sticky overdrive with a strong midrange.
    Flexible operation is possible thanks to the use of effect loops and series connections.
  • Home recording/line-in type people who want to create the ultimate tone without relying on an amplifier
    Unobtanium is characterized by its amp-like response and thick overtones.
    In other words, the sound is less likely to become thin even when recording DI/line,"A strong, amplified sound"You get. The Dumble emulation has a particularly three-dimensional feel, making it a great choice for those who want a "convincing sound" in a line environment.
  • Guitarists who want a wide range of expression from solos to backing
    I want to bring out the nuances of my picking with a clean boost.
    I want to add thickness to my leads with a firm midrange.
    I want a solid sound even with coil tap guitars and single coils
    In response to these demands, UnobtaniumThe ability to use the two systems in series or individuallyis our strength.
    for example:
    Only the clean Klon side is always on → Boosts the basic tone
    Dumble is on only during solos → Adds fullness and compression to the midrange
    The reverse is also possible (Klon→Dumble or Dumble→Klon).
  • Those who already own high-end pedals and are looking for their next move
    The sound quality and flexibility of Unobtanium will appeal to intermediate to advanced players with discerning ears.
    In particular, since you can freely design the effects loop to be something like "Klon → [spatial pedal] → Dumble," it's worth making it the "core pedal at the heart of your board."

Unobtanium has achieved the balance of "core sound," "expressiveness," and "versatility."
This is a rare pedal that can meet professional level demands.

The clean beauty of Klon, the thickness and tenacity of Dumble.
For guitarists who want to dabble in both, there's no other option that's as efficient or practical.

"Advanced tone, all in one unit."
That's Unobtanium.

Crazy Tube Circuits
62,900 JPY(TAX+) (As of 2023:06 on March 13, 22 | According to Yahoo Shopping)

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