In the words of Electro-Harmonix:

Back by overwhelming demand… now in a mini package! The cult classic Green

Russian Big Muff first shook the ground in the mid-1990s. Since then it has been heralded by guitarists and bassists for its devastating low-end and unique sludge and sizzle. The Green Russian Big Muff creates a huge tone that is all its own, but still undeniably Big Muff.

• A faithful reissue of the legendary Green Russian Big Muff from the mid 1990s
• Revered by guitarists and bassists
• Vintage-correct army green chassis
• Controls for Tone, Sustain and Volume
• Compact and pedalboard friendly
• True Bypass for maximum signal path integrity in bypass mode.
• Accepts an optional EHX9.6DC-200 AC Adapter.