Black Eye II is a medium-high gain preamp/distortion based on the Soldano Supercharger GTO. A few changes have been made, most notably that the single-knob tone control was swapped in favor of a Baxandall tonestack, and a Bass Boost switch was added. The bass boost isn’t a huge drastic change, but it opens up the low end frequency response to make the pedal more suitable for use on bass. With the gain all the way down you get an almost-clean, or fully dimes you can get monstrously aggressive, face-melting distortion.

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Black Eye II

Finally is my basic take on a tube D.I. It takes your unbalanced guitar input and feeds it through a high-voltage tube preamp then out through a high-end DI transformer and out into a balanced XLR output. You also have a 1/4″ output up top, and you can switch between dry passthrough from the input or affected output from the preamp for the 1/4″ output.

finally

The Echosaurus is a digital multi-tap delay based on the legendary Binson Echorec. At its heart is the powerful FV-1 digital effect processor, commonly found in big name and boutique digital effects alike.

Echosaurus

The Underground Accelerator is the successor to both Particle Accelerator and London Underground.

Neither were perfect, but both had strengths that the other didn’t so, Underground Accelerator takes the best of both into one glorious preamp. It follows the same general structure of the London Underground, letting it get a little more grit than Particle Accelerator, but still keeping the deep low end that London Underground lacked.

It sounds great as a clean boost or mild overdrive on guitar, but bass is where it really sings, providing the rich bottom end missing in so many bass pedals.

*The newest version of the Underground Accelerator has an EQ bypass switch. Note that the main purpose of the EQ Bypass is to boost the gain of the pedal, and bypassing the EQ will produce approximately +30dB more gain. Passive EQs like the one used in Underground Accelerator are inherently lossy, so the bypass was added for those that want more gain and don’t need the use of the EQ. If you simply want a flat response without the gain boost, you can set Treble and Bass to minimum and Mids to maximum.

Undeground Accelerator

The JC Emerald is based on the preamp of the legendary Marshall JCM800. It has been modified to make it more suitable for pedal/preamp use while staying true to the original JCM800 design. This latest version includes some additional toggle switches to make the preamp design more flexible.

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