Crazy Tube Circuits Unobtanium RAW

Overdrive / Amp-in-a-Box Pedal!
  • Analog Dual Overdrive Pedal
  • Faithful Clone of Centaur Circuit with Germanium Diodes, switchable to NOS Mullard/Valvo OC45 Germanium Transistors
  • The world’s first "clone" with Germanium Transistors in the clipping section
  • Selectable Buffered or True Bypass
  • Dumble-Style Amp Simulation with 2 Different Voicings
  • Amp Voicings switchable via built-in mini toggle or optional external footswitch
Variants (1)
Crazy Tube Circuits Unobtanium
Crazy Tube Circuits Unobtanium Crazy Tube Circuits Unobtanium
Crazy Tube Circuits Unobtanium
  • "Klon" Pedal Channel: authentic reproduction of the original circuit
  • "Dumble" Amp Channel: 2 overdrive circuits with Dumble voicings
  • Both channels can be used independently or in series
  • Switching via toggle switch or external footswitch
  • Passive, serial effects loop
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Delivery time 1 - 2 working days
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+ 0,99
Shipping on 20.05.2026
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+ 5,90
Delivery on Thursday, 21.05.2026, if you order within  12 Hrs. 35 Min. 
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Unobtanium RAW – a rare element with special refinement!

The basic design remains the same as the standard version of the Unobtanium pedal: On the right side, a detailed replica of the K-Style Overdrive takes center stage, while the left side features two D-Style amplifier voicings, representing the rarest and most sought-after tube amps in the world.

For the RAW edition, Crazy Tube Circuits added some magical ingredients to the clipping section of the K side: a selection of handpicked New Old Stock Mullard/Valvo OC45 germanium transistors from the 1960s. The Crazy Tube Circuits team tested many germanium transistor types and discovered that the OC45 transistors deliver a supernatural playing feel with organic compression, plus more gain and sustain. Don’t worry – the original sounds remain intact in the default setting, with germanium diode clipping from the original circuit.

The amp-in-a-box side of the RAW version is glassier and punchier than the standard version. Think singing blues rock and classic rock tones that cut through the mix and work flawlessly with all kinds of guitar/pickup combinations.

Like the standard version, the Unobtanium RAW features a passive effects loop, allowing you to insert your favorite pedals between the booster/overdrive side and the amp side, or use both sides as separate and independent effects, e.g., when using an external looper.

Unobtanium RAW includes a power-up bypass/engage preset function. This lets you choose the pedal’s state when powering up. This feature is especially handy for users with remote pedal switches/loopers, as the on/off state only needs to be set once and can then be controlled via the controller.

The RAW version does not replace the standard version of the successful Unobtanium pedal. It is built in limited numbers and will remain available as long as Crazy Tube Circuits has the wonderful NOS Mullard/Valvo OC45 in stock.

Features

  • Dual Overdrive Pedal, both drives usable independently
  • Right Side: Faithful Centaur Circuit Clone with Germanium Diodes, switchable to NOS Mullard/Valvo OC45 Germanium Transistors(!)
    - The world’s first "clone" with Germanium Transistors in the clipping section
    - Controls for Gain, Treble (Tone), Volume, switches for Bypass Mode and Clipping/Compression
    - Extremely wide gain range: from transparent boost to overdrive with plenty of headroom
    - Active Treble control allowing both cut and boost of high frequencies
    - Volume control for overall output level. Provides some dB of boost if needed
    - Choice between original buffer bypass circuit for long cable runs or true bypass
    - Choice between Germanium diode clipping (original) or clipping with NOS Mullard/Valvo OC45 Germanium Transistors(!) for more gain and sustain.
  • Left Side: Dumble "Amp-in-a-Box" Overdrive
    - Controls for Gain, Emphasis, Tone, Volume, switch for amplifier voicing
    - Gain control: from clean boost to raw, singing overdrive
    - Emphasis is a pre-drive EQ to adjust presence and bass resonance
    - Tone controls the amount of high frequencies after the distortion stage
    - Volume adjusts output level. Can be matched to bypass volume or used as a boost
    - Toggle switch to select between two different amp voicings: Steel String Singer or Dumble Overdrive Special
    - SSS: "Clean" overdrive with organic compression
    - ODS: More gain with enhanced midrange and harmonically rich overdrive
    - Left LED changes color depending on voice setting
    - Input for external footswitch to toggle voice setting
    - Optional external XT footswitch available (not included)
    - Internal trim controls for fine-tuning EQ and volume boost of the overdrive voicing
  • Passive, serial effects loop between the two pedal sides to integrate additional effects or use both sides separately
  • Operates internally at 18 V DC for more headroom, tube-like feel, and exceptionally sensitive response to playing dynamics
  • Top-mounted jacks
  • Click-less bypass switch with relay
  • Memory function for bypass switches; pedal remembers footswitch settings when powered off
  • Power supply: 9V DC, center negative (not included)
  • Current draw: 83 mA
  • Dimensions (WxDxH): 147 x 103 x 65 mm
  • Weight: 521 g
  • Quartz gray metallic die-cast enclosure with white ink old-school lettering
  • Made in Greece

Scope of delivery

  • 1 x Crazy Tube Circuits Unobtanium RAW Pedal

Specification

  • Product number 00113063
  • Colour Grey

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Your contact persons

The hotline is currently not manned. You can reach us again on Wednesday, 20.05.2026 at 09:30.

Wednesday 09:30 - 18:00
Thursday 09:30 - 18:00
Friday 09:30 - 18:00
Saturday 09:30 - 13:30
Monday Closed
Tuesday 09:30 - 18:00