Dan D’Agostino Master Audio Systems is a registered trademark of Dan D’Agostino Master Audio
Systems LLC. The information in this owner’s manual is subject to change without notice. Current
Version 1.0 of this manual was produced by the Dan D’Agostino Master Audio Systems LLC
engineering, sales and marketing departments.
The information in this manual is the sole property of Dan D’Agostino Master Audio Systems LLC.
Any reproduction in whole or part without the expressed written permission of Dan D’Agostino Master
Audio Systems LLC is prohibited. No material herein may be transmitted in any way, including either
electronic or mechanical methods, for any purpose without the expressed written permission of
Dan D’Agostino Master Audio Systems LLC.
WARNING
Do not expose this amplifier to moisture or excessive humidity, and do not use it outdoors. Fire hazard
may result.
The lightning flash with arrowhead, within an equilateral triangle, is intended to alert the
user to the presence of uninsulated “dangerous voltage” within the product’s enclosure
that may be of sufficient magnitude to constitute a risk of electrical shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to the
presence of important operating maintenance (servicing) instructions in the literature
accompanying the appliance.
CAUTION
No user-serviceable parts inside.
Do not open the amplifier’s chassis or remove any of its screws.
Contact Dan D’Agostino Master Audio Systems LLC or your dealer if you have service needs.
LEGAL NOTIFICATIONS
Package contents
If any of the following items are missing, please contact your dealer:
1 Relentless monoblock amplifier encased in protective vinyl sleeve
1 owner’s manual
4 pair of white lifting gloves
1 microfiber cleaning cloth
1 AC power cord (selected for your voltage and socket requirements)
1 ratchet with custom carbon-fiber socket for binding post
Unpacking the Relentless monoblock amplifier from its case
Each Relentless amplifier weighs 570 lbs/258 kg, so it requires at least four strong adults to lift. Be sure
to have a place cleared for it before you lift, and move the box as close as possible to the spot where
the amplifier will rest.
Installation requirements
In most cases, the Relentless amplifiers will have to sit directly on the floor, because few shelves or
stands can support their weight. If you do use a stand, make sure it has been designed specifically to
support the Relentless amplifier. Stands used for other amplifiers will not be strong enough.
Adequate ventilation must be provided for the amplifier. There should be at least 6 inches of
clearance on each side of the amplifier and 6 inches of clearance at the top, and the bottom vents
of the amplifier must not be obstructed by thick carpet, dust, etc. The amplifier may be installed in
a closed cabinet in an equipment closet, but the cabinet or closet must be designed with substantial
ventilation at top and bottom; active ventilation (i.e., powered fans) is preferred. Do not place the
amplifier directly on a carpeted floor.
For best possible sound quality and maximum output, you must connect each Relentless monoblock
amplifier to at least a dedicated 20-amp outlet. If your speakers are rated at 4 or 2 ohms impedance,
and you want the amplifier to be able to achieve its maximum rated power, you will have to have two
220-volt/30-amp sockets installed, one for each amplifier. This is the same type of outlet commonly
used to power electric clothes dryers and ovens, and any licensed electrician can install them.
UNPACKING AND INSTALLATION
