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****** Page 1 ****** electro-barmonix DOUBLE MUFF Classic Dual Muff Overdrive Congratulations! You have just purchased the finest overdrive pedal developed to date for the electric guitar player. The Double Muff takes our original Muff Fuzz circuit and doubles it so that you have two Muff Fuzzes in one pedal. You have the option of using just one Muff for a hint of milky distortion, or cascading the second Muff for over-the-top overdrive that turns your milk into cream. In single mode, the amount of overdrive will lessen as you decrease the volume on your guitar. You can compensate for this by increasing the volume of the Single Muff. In Double Mode, the Muff knobs will interact with each other so that you can tweak your sound for the peffect amount of distortion every time. -CONTROLS- SINGLE/ DOUBLE Switch— Selects between one Muff in SINGLE mode or two Muffs in series in DOUBLE mode. MUFF 1— Sets the overall output level for the Double Muff in either mode. MUFF 2— Sets the output level for the first Muff in Double mode. In Single mode this knob is inactive. STATUS— If on, the unit is engaged. If off, the unit is in True Bypass mode. -OPERATION AND WARNINGS- Plugging into the input will activate power from the internal 9-volt battery or external battery eliminator. The input cable should be removed when the unit is not in use to avoid running down the battery. In Double mode, the Double Muff has very high maximum gain, requiring that pickups and cables be well shielded and properly grounded to avoid excessive hum. The small jack on the back of the Double Muff is for a 9-volt battery eliminator capable of delivering 100mA of current. The unit’s battery may be left in or taken out when the eliminator is in use.

****** Page 2 ****** – WARRANTY INFORMATION – Please register online at or complete and return the enclosed warranty card within 10 days of purchase. Electro-Harmonix will repair or replace, at its discretion, a product that fails to operate due to defects in materials or workmanship for a period of one year from date of purchase. This applies only to original purchasers who have bought their product from an authorized Electro- Harmonix retailer. Repaired or replaced units will then be warranted for the unexpired portion of the original warranty term. If you should need to return your unit for service within the warranty period, please contact the appropriate office listed below. Customers outside the regions listed below, please contact EHX Customer Service for information on warranty repairs at or +1-718-937-8300. USA and Canadian customers: please obtain a Return Authorization Number (RA#) from EHX Customer Service before returning your product. Include with your returned unit: a written description of the problem as well as your name, address, telephone number, e-mail address, and RA#; and a copy of your receipt clearly showing the purchase date. United States & Canada EHX CUSTOMER SERVICE ELECTRO-HARMONIX c/o NEW SENSOR CORP. 55-01 2ND STREET LONG ISLAND CITY, NY 11101 Tel: 718-937-8300 Email: Europe JOHN WILLIAMS ELECTRO-HARMONIX UK 13 CWMDONKIN TERRACE SWANSEA ORQ UNITED KINGDOM Tel: +44 179 247 3258 Email: This warranty gives a purchaser specific legal rights. A purchaser may have even greater rights depending upon the laws of the jurisdiction within which the product was purchased. To hear demos on all EHX pedals visit us on the web at Email us at FCC COMPLIANCE Note: This equipment has been tested and found to comp/y with the limits for a C/ass B digita/ device, pursuant to part 15 of the FCC Rules, These limits are designed to provide reasonable protection against harmfu/ interference in a residential insta//ation. This equipment generates, uses and can radiate radio frequency energy and, if not insta//ed and used in accordance with the instructions, may cause harmful interference to radio communications However, there is no guarantee that interference wi// not occur in a particular insta//ation, If this equipment does cause harmfu/ interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the fo//owing measures: Reorient or relocate the receiving antenna, Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consu/t the dealer or an experienced radio/TV technician for help. Modifications not express/y approved by the manufacturer could void the user’s authority to operate the equipment under FCC rules.








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