Specifications

Model 9762 – Dual Combo Owners Manual

1 Welcome!

Thank you for purchasing your new Model 9762 Dual-Combo

Microphone Preamplifier! Before operating or installing the unit, please

read this manual thoroughly and retain it for future reference. Additional

copies of this manual are available upon request or from our website at

http://www.rtzaudio.com.

All units are carefully packed to endure the rigors of shipping and

handling. However, please inspect all contents and packaging

immediately upon receipt. Please report any problems to us immediately.

In the event of damage, retain all shipping and packaging materials for

shipper damage claims inspection.

The 9762 is designed to deliver a lifetime of musical pleasure and trouble

free operation. If you experience any problems or difficulties, please

yourself. Each unit has been carefully tested and calibrated for proper

operation. Any unauthorized modifications may destroy the unit or

severely degrade performance and void the warranty.

2 Overview

The 9762 preamplifier is designed to emulate the vintage 1970s large

format consoles (i.e. Neve 1073 Series) yet provide a more open and

detailed sound by using modern components and transformers. We use

a super high quality input transformer (manufactured by Lars Lundahl of

Sweden) with excellent sonic performance. This transformer is

considered by many to be one of the world’s finest input transformers.

The preamp gain blocks and gain structure have been optimized to

match the input transformer impedance characteristics as closely as

possible. This combination of classic circuitry and a modern input

transformer allows the 9762 to deliver a classic super fat sound with the

benefit of increased high-end openness and clarity.

The standard unit contains two channels of high gain amplification

capable of providing up to 75 dB of gain. All XLR input and output

connectors are transformer balanced and isolated. Unbalanced line

output connectors and direct input (DI) instrument connectors are also

provided. Standard features include +48V Phantom power, polarity

(phase) reverse, DI input source select, microphone impedance select

and output termination switching.

The internal power transformer may be configured for either 115V or

230V (50/60 Hz) operation via the rear panel power entry module. Each

preamplifier circuit board contains onboard regulation, filtering and a

thermal safety fuse that operates completely independently from the

other channel. The internal safety fuses protects each channel’s amplifier

board against major damage in the unlikely event of component failure.

RTZ Professional Audio