User manual

Many users like to experiment by changing their tubes with different brands to hear alternative
tone qualities. It is recommended that any tube changes be done only if necessary and by a
qualified or authorized facility. The Dirty Boy has a user adjustable Bias control which is set at
the factory to provide a window of variable bias for the tubes, which were installed at the time
the amp is built and equipped with tubes. You can change the preamp tubes without any need
for assistance. We would recommend you consult us first before changing the amplifiers power
tubes. If there is a need to change or replace your power tubes, please contact us first. PLEASE
CONTACT US AT [e-mail]. We do not accept telephone calls for
technical support unless the products are under the basic warranty which comes with the amp
or extended 5 year warranty, which is optional at the time of purchase. Please refer to our FAQ
page for information regarding the servicing of the Dirty Boy amp. SERVICE SHOULD ONLY
BE PERFORMED BY A QUALIFIED ELECTRONICS TECHNICIAN. DO NOT ATTEMPT TO
SERVICE THSI PRODUCT ON YOUR OWN. DO NOT OPEN THE DIRTY BOY AMPLIFIER
AS IT HAS HAZARDOUS AND DANGEROUS HIGH VOLTAGE INSIDE.
SECTION 6. Warranty and Registration Information.
All Dirty Boy Amplifiers come with a one (1) year parts, 90 day labor warranty against
manufacture defect. Warranties do not cover abuse or misuse by users, nor do warranties cover
accidental damages. Extended warranties cover parts and labor for five (5) years but are
subject to examination by the manufacture as to the cause or need for service. If it is
determined that the service is not a warranty issue, an estimate for service and repairs will be
given before work is done. Tubes are excluded form parts warranty and are only good for 30
days after date of purchase.
All repairs must be performed by the manufacture only. Mojave Ampworks does not authorize
any service work nor will Mojave Ampworks offer reimbursement for service work performed by
outside facilities. Removal of the amplifier from it’s protective head cabinet will constitute
tampering and void all warranties. If evidence of tampering is present, all warranties are void.
Return authorization is required for repair or service if needed.
Service questions may be submitted by email. An appointment for Telephone assistance can be
made by email. We offer technical assistance to the original owner of the amplifier only.
Warranties are not transferable.
WARNING: Any attempt to open the Dirty Boy for unauthorized service will void the
warranty. There are temper proof bolts on the amp to prevent access for your safety.
Register your product at: mojaveampworks.com. Mailing address:
Mojave Ampworks
PO Box 1089
Apple Valley, CA 92307
Do not discard your factory shipping box, you may need it to return your amp for service if
necessary. Mojave Ampworks does not accept amplifiers returned unless shipped in a factory
box. If you discard your original box you will have to purchase a new one in order to return your
amp for service.
As noted above, your amplifier was shipped with ten (10) boxes that contained the required
tubes to properly operate the amplifier. The boxes contain the brand and ratings labels. Please
keep these boxes for reference or write down the numbers for future use.
Dirty Boy User Manual