*Hidden Gem Guitars is an authorized Electro-Harmonix dealer!  Visit our retail location just 20 miles south of downtown Chicago in the quaint village of Flossmoor.  We ship globally with most orders going out via UPS within 24 hours of purchase!* 

From the EHX website:

Back by overwhelming demand… 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 EHX Green Russian Big Muff creates a huge tone that is all its own, but is 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
• 9V battery included