Electro-Harmonix Muff Overdrive Muff Overdrive Manual

FCC COMPLIANCE

Note:

This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful
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 following 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.

•

Consult the dealer or an experienced radio/TV technician for help.

Modifications not expressly approved by the manufacturer could void the
user's authority to operate the equipment under FCC rules.

MUFF OVERDRIVE

Congratulations! You have just purchased the MUFF OVERDRIVE,
an identical reissue of the classic EH Muff Fuzz first released in

1969. It is also one half of the DOUBLE MUFF that Electro
Harmonix currently manufactures.

-CONTROLS-

VOLUME CONTROL— Sets the output level.

FOOTSWITCH – Selects whether the MUFF OVERDRIVE is engaged or in

True Bypass. The corresponding LED will be lit when the pedal is engaged,
and dark when True Bypassed.

The MUFF OVERDRIVE is a dynamic pedal, meaning it interacts with the
output level of your instrument more so than other effects. Adjust the
volume on your instrument to control the amount of distortion produced by
the MUFF OVERDRIVE. Then, use the volume control on the MUFF
OVERDRIVE to adjust your overall volume. Experiment with two MUFF
OVERDRIVE pedals in series.

-OPERATION AND WARNINGS-

Power, from the internal 9-volt battery or external battery eliminator, is
activated by plugging into the input. The input cable should be removed
when the unit is not in use to avoid running down the battery. The input
impedance presented at the Input Jack is 100 kohms. The output impedance
at the Output Jack is 10 kohms.

The barrel connector on the front of the MUFF OVERDRIVE is for a 9-volt
battery eliminator capable of delivering 100 mA of current. The inner ring of
the 9-volt battery eliminator must be negative, the outer ring positive. The
unit’s battery may be left in or taken out when the eliminator is in use.

To change the 9-volt battery, you must remove the 4 screws on the bottom
of the MUFF OVERDRIVE. Once the screws are removed, you can take off

the bottom plate and change the battery. Please do not touch the circuit
board while the bottom plate is off or you may damage a component.

The optional 9V power supply from Electro-Harmonix is US96DC-200BI
(same as used by Boss ™ & Ibanez™) 9.6 volts/DC 200ma. The barrel
connector on the front of the MUFF OVERDRIVE is for the 9-volt battery
eliminator capable of delivering 100 mA of current. The inner ring of the 9­volt battery eliminator must be negative, the outer ring positive. The unit’s
battery may be left in or taken out when the eliminator is in use.

- WARRANTY INFORMATION -

Please register online at http://www.ehx.com/product-registration 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 [e-mail] or [phone]. 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: [phone]
Email: [e-mail]

Europe

JOHN WILLIAMS
ELECTRO-HARMONIX UK
13 CWMDONKIN TERRACE
SWANSEA SA2 0RQ
UNITED KINGDOM
Tel: [phone]
Email: [e-mail]

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 www.ehx.com
Email us at [e-mail]