Red Witch Opia Fuzz Engine

Marsoni

M251S

$114.50

Get it in 3 business days with 1 day shipping. Friday, May 29

Red Witch Opia Fuzz EngineThe OPIA Fuzz engine is a petite device of rare beauty created to deliver phenomenal fuzz. No fuss, no fiddling. Just Click and GO. Dual silicon transistors harmoniously conjure fuzz flavous of epic proportions. Use your guitars volume knob to determine the flavour, feel and grit of the fuzz. From clean glassy highs to wall of fuzz behemothocity, its all there. OPIA has two internal trimpots that you can preset. One controls the overall output volume

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The author, Andy Greenberg, takes the reader through a series of actual whodunit cases where the blockchain is used to trace illicit transactions on the dark web. From corrupt FBI agents to drug sales on the Silk Road, culprits are rooted out by following cryptocurrency through the blockchain. Each case is different and often involves an international game of cat and mouse. In addition, the author discusses some of the ethical issues surrounding an anonymous currency. Most readers will find this book an easy and engaging read, even if they are not familiar with the blockchain.

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Reviewed in the United States on February 19, 2024

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Rachel Gollub

Belleville, US

★★★★★ 4

Fascinating look at Bitcoin privacy

Format: Kindle

This is a great look at what Bitcoin is and isn’t. The misconceptions about it gave rise to tools to track it, leading to the high profile cases Greenberg covers in the book. Not a highly technical book, but there are enough references to papers and authors to find out more. Very cool,

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Reviewed in the United States on January 3, 2023

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Battle Creek, US

★★★★★ 5

Excellent non-fiction cryptocurrency sleuth story.

Format: Paperback

I thought this book was an excellent non-fiction account about how a team of "Cyber-Investigators" tracked and took down several criminals using Bitcoin for drug deals and other nefarious activities. The book read like a novel. I enjoyed it and had trouble putting it down.

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Reviewed in the United States on October 3, 2025

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Shereen Baba

Birmingham, US

★★★★★ 5

Name Craft Lesson

Format: Board book, Format: Board book

Loved reading this book and tying it into a name craft for my toddler!

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Reviewed in the United States on April 29, 2026

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