Premier Guitar features affiliate links to help support our content. We may earn a commission on any affiliated purchases.

Crazy Tube Circuits Unveils Unobtanium Raw

Crazy Tube Circuits Unveils Unobtanium Raw

Featuring rare NOS Mullard/Valvo OC45 germanium transistors for organic compression, increased gain, and sustain.


"The main composition has stayed the same as the standard version of Unobtanium that we released back in December 2022. A recreation of the Klon style overdrive true to the last detail finds its place at the right section of the pedal while the left section features two Dumble style amplifier voicings, the most unobtainable tube amplifiers in the world."

For the RAW edition, Crazy Tube Circuits added a couple of ingredients to the clipping section of the K side: a set of hand-selected New Old StockMullard/Valvo labeled OC45 germanium transistors from the 60s. They tested many germanium transistor types and found that the OC45 transistors added a supernatural feel with organic compression for increased gain and sustain. The standard sounds are still there in the stock setting where you listen to germanium diodes clipping like in the original unit.

As with the standard version, Unobtanium Raw features a passive effects loop to give you the option to connect your beloved pedals between your booster/overdrive and amp in a box or use the two sections as separate and independent effects when using an external bypass switcher/looper. Note that all pedals inserted in the passive effects loop are still in the signal chain when any or both sections of are in bypass mode.

The RAW version will be built in limited quantities and stay out there for as long as we have stock of the NOS Mullard/Valvo OC45 germanium transistor. It is now available through our online direct store and dealer network.

Street price: 339 Euro, 349 USD

For more information, please visit crazytubecircuits.com.

Keith Urban’s first instrument was a ukulele at age 4. When he started learning guitar two years later, he complained that it made his fingers hurt. Eventually, he came around. As did the world.

Throughout his over-30-year career, Keith Urban has been known more as a songwriter than a guitarist. Here, he shares about his new release, High, and sheds light on all that went into the path that led him to becoming one of today’s most celebrated country artists.

There are superstars of country and rock, chart-toppers, and guitar heroes. Then there’s Keith Urban. His two dozen No. 1 singles and boatloads of awards may not eclipse George Strait or Garth Brooks, but he’s steadily transcending the notion of what it means to be a country star.

Read MoreShow less

An '80s-era cult favorite is back.

Read MoreShow less

The SDE-3 fuses the vintage digital character of the legendary Roland SDE-3000 rackmount delay into a pedalboard-friendly stompbox with a host of modern features.

Read MoreShow less

English singer-songwriter Robyn Hitchcock is as recognizable by tone, lyrics, and his vibrantly hued clothing choices as the sound of Miles Davis’ horn.

Photo by Tim Bugbee/tinnitus photography

The English guitarist expands his extensive discography with 1967: Vacations in the Past, an album paired with a separate book release, both dedicated to the year 1967 and the 14-year-old version of himself that still lives in him today.

English singer-songwriter Robyn Hitchcock is one of those people who, in his art as well as in his every expression, presents himself fully, without scrim. I don’t know if that’s because he intends to, exactly, or if it’s just that he doesn’t know how to be anyone but himself. And it’s that genuine quality that privileges you or I, as the listener, to recognize him in tone or lyrics alone, the same way one knows the sound of Miles Davis’ horn within an instant of hearing it—or the same way one could tell Hitchcock apart in a crowd by his vibrantly hued, often loudly patterned fashion choices.

Read MoreShow less