E-H had progressed to using larger boxes for their pedals around 1973 and the Big Muff was given an upgrade to this box for Version 2, and a new art nouveau-ish typeface. It has come to be known as the "Ram's Head" version, based on the most common nickname. There were numerous versions of the V2 circuit, each with a slightly different sound. The most popular was the "violet" version. Early V2 Big Muffs shipped with a rubber skid pad attached to the bottom panel, similar to the Triangle Muff skidpad, but this was later changed to four rubber feet around 1974 or 1975. The list price was originally $39.95, but it could be found for $32-29.95, or less, according to some original owners. Around 1974 the list price went up to $49.95 but some sellers were still as low as $29.95. It was the #1 best-selling pedal for Electro-Harmonix in the 1970s until the Small Stone phaser, released around 1975, knocked it down to the #2 spot. The V2 was produced until around 1977 when the graphics were changed to the V3 look.
David Gilmour of Pink Floyd got into using the Ram's Head Big Muff in the late 1970s and recorded some of the most famous solos in Rock and Roll with it. Ernie Isley of the Isley Brothers used a Ram's Head Big Muff throughout much of the 1970s. J Mascis of Dinosaur jr is another well-known user.
Model Number: EH3003
Circuit Designer: Bob Myer with Mike Matthews
Circuit Variants: Approximately 20
Edition Versions: 3 - First edition manufactured circa 1973 (square face logo, no OFF graphic), second edition (round face logo, no OFF graphic) circa 1974, third circa 1975 (square face logo and both ON/OFF graphic)
True Bypass: No
Power Supply: Current draw approximately 3 mA. 9V battery only, or use a 9V battery snap adapter like the 1 Spot CBAT and connect to a standard negative center power supply like the Boss PSA120T, 120S, or 1 Spot 9V AC Adapter. Note some V2 Big Muffs are positive ground (PNP), so the power cannot be daisy-chained with standard negtive tip ground pedals. See POWER section below for important adaptor and daisy chaining power requirements.