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MODEL 125 STEREO AMPLIFIER
Operational Manual
© Jeff Rowland Design Group 2014 All Rights Reserved
The crossed-out wheeled bin is the European Union symbol for
indicating separate collection for electrical and electronic equipment.
This product contains electrical and electronic equipment which
should be reused, recycled or recovered and should not be
disposed of with unsorted regular waste. Please return the unit or
contact the authorized dealer from whom you purchased this
product for more information.
IMPORTANT SAFETY INSTRUCTIONS
The amplier has been designed to operate at the highest level of efficiency and performance
in any normal operating situation; however, there are a few important use and care principles
that must be kept in mind when operating the amplier:
Read these instructions.
Keep these instructions.
Follow all instructions.
Do not expose the amplier to rain, moisture, or excessively damp conditions.
Do not block any ventilation openings.
Due to auto-ranging circuitry and dual-stage voltage regulation, the audio
performance will not be affected by any voltage uctuations within the operating
voltage range. The MODEL 125 can be operated at any mains voltage over the range of
85 to 265 VAC without any adjustments necessary.
The MODEL 125 must not be modied in any way, other than according to official
service bulletins from JRDG (Jeff Rowland Design Group). Otherwise, the factory
warranty will be immediately voided.
When operating the MODEL 125, a properly grounded AC receptacle should be used. A
potential shock hazard may result if the supplied 3-wire, grounded AC cable ground
terminal is defeated or lifted or the unit is connected to a 2-wire ungrounded AC
outlet.
PROTECTIVE SYSTEMS
The MODEL 125 is equipped with internal fuses for protection against excessive AC current
draw; however, since no protection circuitry or system can completely protect a product from
every electrical hazard, certain precautions should be observed. In the event of severe voltage
hazards such as lightning or when the amplier will not be used for extended periods of time,
the amplier should be unplugged from the AC mains to avoid potential damage to the
internal circuitry. All other audio/video system components should also be disconnected from
AC mains power as hazardous voltages can easily travel throughout an interconnected system.
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This product complies with European Low Voltage (2006/95/EC) and
Electromagnetic Compatibility (89/336/EEC) Directives when used
and installed according to this instruction manual. For continued
compliance servicing must be referred to qualified service
personnel.
LIMITED WARRANTY
Jeff Rowland Design Group, Inc. warrants the materials, workmanship, and proper functioning
of this product for a period of ve years from the date of purchase as long as the product was
operated in accordance with its operating manual, the products was not altered or improperly
serviced or prepared, or if the product failed to function from the beginning. In the event of
such a failure, the product will be repaired or replaced by Jeff Rowland Design Group, Inc.
through one of its dealers. This warranty is extended to the original purchaser only and is nontransferable to any secondary or other purchaser.
In order to have this product repaired or replaced, the original purchaser must rst obtain the
prior authorization of Jeff Rowland Design Group, Inc. or one of its dealers. Purchaser must
then return the product, PACKAGED IN ITS ORIGINAL CARTON, FREIGHT PREPAID to: Jeff
Rowland Design Group, Inc., 2911 North Prospect Street, Colorado Springs, Colorado, 80907, or
to one of its dealers.
Jeff Rowland Design Group, Inc. reserves the right to inspect any product which is subject to
any warranty claim prior to repairing or replacing it. Final determination of warranty coverage
lies solely with Jeff Rowland Design Group, Inc. Said determination shall be made as soon as
possible following receipt of the product. Jeff Rowland Design Group, Inc. may, at its option,
require from the purchaser, valid proof of purchase (dated copy or photocopy of dealer's
original invoice). Out-of-warranty claims will be billed for labor, materials, return freight, and
insurance as required. Any product for which a warranty claim is accepted will be returned to
the purchaser and costs of shipping and insurance will be factory prepaid within the
boundaries of the USA. Units to be shipped outside of the USA will be shipped freight collect
only. This warranty gives the holder specic legal rights. The purchaser also has implied
warranty rights, and may also have other rights which may vary from state to state.
Jeff Rowland Design Group, Inc. strives to manufacture the very nest possible equipment and
therefore reserves the right to make changes in design and improvements upon its previously
manufactured models.
THE ABOVE WARRANTY IS THE SOLE WARRANTY GIVEN BY JEFF ROWLAND DESIGN GROUP,
INC. AND IS IN LIEU OF ALL OTHER WARRANTIES; ALL IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE SHALL BE STRICTLY LIMITED
IN DURATION TO FIVE YEARS FROM THE ORIGINAL DATE OF PURCHASE AND UPON THE
REVA2 MODEL 125 STEREO AMPLIFIER PAGE 2
EXPIRATION OF THIS FIVE YEAR WARRANTY PERIOD, JEFF ROWLAND DESIGN GROUP, INC.
SHALL HAVE NO FURTHER OBLIGATION OF ANY KIND WHETHER EXPRESSED OR IMPLIED.
Jeff Rowland Design Group, Inc. does not authorize any third party, including any dealer or
representative, to assume any liabilities on its behalf or to make any warranties on its behalf
unless authorized to do so.
Warranty registration cards must be completed and mailed to Jeff Rowland Design Group, Inc.
within thirty (30) days of the date of purchase. If this product is used in a commercial or
industrial application, then special warranty exclusions may apply. Contact your dealer or Jeff
Rowland Design Group, Inc. for information regarding our commercial warranty policies.
GUIDE USE
This guide is designed to make installing and using this product as easy as possible.
Information in this document has been carefully checked for accuracy at the time of printing;
however, Jeff Rowland Design Group, Inc.'s policy is one of continuous improvement, therefore
design and specications are subject to change without prior notice. If you notice any errors
please feel free to email us at: support@jeffrowlandgroup.com.
This document contains proprietary information protected by copyright. All rights are
reserved. No part of this manual may be reproduced by any mechanical, electronic or other
means, in any form, without prior written permission of the manufacturer. All trademarks and
registered trademarks are the property of their respective owners.
© Copyright Jeff Rowland Design Group, Inc 2014
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W
NOTE FROM JEFF ROWLAND DESIGN GROUP
elcome to the Jeff Rowland Design Group “family” and congratulations on your
purchase of what is unquestionably one of the world’s nest ampliers. With its
combination of features such as precision electronic circuitry, exceptional efficiency, and
accurately machined chassis components throughout, your MODEL 125 will offer you many
years of musically satisfying enjoyment.
Please take a few minutes to read the remainder of this Owner’s Manual before proceeding
with the installation of the amplier. A thorough understanding of the operational features
will allow you to gain the maximum performance and ease of use for which this amplier was
designed.
Please note that your MODEL 125 serial number begins with the letters “SF”. Please include this
number with any correspondence regarding your MODEL 125. It has been my joy to create an
audio component of enduring value that reects the highest ideals of musical and artistic
expression. It is my hope that these qualities will enrich your experience and pride of
ownership.
If you have any additional questions regarding the installation or operation of the MODEL
MODEL 125, please contact your authorized Jeff Rowland Design Group dealer or check the Jeff
Rowland Design Group web site at http://jeffrowlandgroup.com.
Enjoy the music!
Jeff Rowland
President, Jeff Rowland Design Group
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