Rolls RA53 Manuel D’Utilisation

Thank you for your purchase of the Rolls RA53 Stereo Headphone Amplifier. This
unit was designed to provide years of dependable service. Please read this
manual carefully to ensure proper operation.
The RA53 is a five-channel headphone amplifier with a variety of input options. In
addition to the four master mix inputs, three separate mixes may be monitored
using the main inputs and the two Insert jacks on Channels 1 and 2.
A 1/4” Link Input/Output jack is provided for connecting two RA53 units together,
providing up to ten channels of headphone monitoring.
Finally - the RA53 is loud. It has plenty of gain for operation in noisy environ-
ments, and works with most any headphone impedance.

INSPECTION
1. Unpack and inspect the RA53 box and package.
If obvious physical damage is noticed, contact the carrier immediately to make a
damage claim. We suggest saving the shipping carton and packing materials for
safely transporting the unit in the future.

2. Please complete the Warranty Registration Card and return it to the factory.

TABLE OF CONTENTS
Introduction

1

Inspection

1

Table of Contents

1

Description

Front Panel

2

Rear Panel

2

Connection

3

Operation

4

Schematic

5

Specifications

6

Warranty

Back Cover

Input Impedance:

10 K

Ω

Max Input Level:

+18 dBV

Max Gain:

26 dB per channel

Maximum Output Power:

300 mW per channel

Output Impedance:

10 

Ω

S/N Ratio:

>90 dB

THD:

<.08%

IMD (SMPTE):

<.08%

Power:

12 VAC
(Adapter Provided)

Size:

8.4” x 1.7” x 5”
(21.3 x 4.3 x 13 cm)

Weight:

2.5 lbs (1.14 kg)

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