JEFF ROWLAND Synergy User Manual

Introduction
W
elcome to the Jeff Rowland Design Group “family” and congratulations on your purchase of what is unquestionably
one of the world’s finest audio preamplifiers. þ With its combination of industrial grade active and passive devices,
precision electronic circuitry and accurately machined chassis components throughout, your Synergy Preamplifier will
offer you many years of musically satisfying enjoyment. þ Please take a few moments to read the remainder of this
Owner’s Manual. þ A thorough understanding of the operational features will allow you to gain the maximum
performance and ease of use for which this Preamplifier was designed. þ Please note that your Preamplifier must be
used with its companion Power Supply. þ The serial number of each component is located on the rear panel of each,
and also recorded below. þ The Preamplifier serial number begins with the letter S and the Power Supply serial
number begins with the letter R. þ Please include these numbers with any correspondence regarding your Coherence
Preamplifier. þ It has been my joy to create an audio component of enduring value which will reflect a higher ideal of
musical and artistic expression. þ It is my hope that these qualities will enrich your experience of ownership.
Enjoy the music!
Jeff Rowland
President
þ Jeff Rowland Design Group, Inc.
2911 North Prospect Street
Colorado Springs, CO 80907
Phone: 719/473-1181
Fax: 719/633-4158

JEFF ROWLAND Synergy Specifications

General

Type	Preamplifier
Power Output	Not applicable
THD+N	< 0.1%
Dimensions	17.5 x 14.5 x 3.5 inches
Weight	20 lbs
Signal-to-Noise Ratio	> 100 dB
Damping Factor	Not applicable

Summary

Introduction

Product Features

Power Supply Features

Initial Inspection

Front Panel Function Controls

LISTEN SELECT and RECORD SELECT

Controls for input selection and recording functions.

Gain Adjustment Controls

Adjusts input gain level up or down in 0.5 dB increments.

Input Configuration Switches

Switches for input impedance, mono, and phase.

BYPASS and MUTE Operation

Engages bypass mode or mutes outputs.

Channel Balance and Muting

Adjusts stereo balance or mutes individual channels.

VOLUME Control

Primary control for adjusting listening volume.

Preamplifier and Power Supply Rear Panels

Preamplifier Rear Panel Connections

Details on rear panel inputs, outputs, and power connection.

Power Supply Rear Panel Connections

Details on power outputs and AC power inlet.

Installation and Operation

Connecting Units and Power

Describes how to connect the preamplifier and power supply.

Break-in Period Recommendation

Advice on initial usage for optimal performance.

Remote Control Features

Synergy Performance Specifications

Power Supply Specifications