Jas-Audio BRAVO 1.1 LE PRE-AMP User Manual

OWNER’S MANUAL

JAS Bravo 1.1 LE

High End Vacuum Tube

Pre-Amplifier

Limited Edition

NOTE: Before installing your new Bravo 1.1 LE audio pre-amplifier, please
read this manual carefully. It will inform you of the product specifications and
also proper installation and operation procedures .

For additional requests
If you have any additional questions regarding the installation
or operation of our products, you are welcome to contact us directly via
email: “ [e-mail] “, and please check frequently our JAS Audio
official website: “ http://www.jas-a udio.co m “.

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JAS AUDIO HIGH End Vacuum Tube

Pre-Amplifier

BRAVO 1.1 LE

Welcome to JAS Audio Family! This JAS Bravo 1.1 LE vacuum tube pre-amplifier is designed
and manufactured to the highest quality standards in design and craftsmanship. S e p ar a t e
matching cabinets of piano finish on Rosewood veneer with black
acrylic sheets for both face and back plates in rectangular shapes
help create a visually pleasing classic appearance. This exquisite design is
also a representation of simplicity, performance and elegance.

IMPORTANT: before operating the unit, make sure
you are familiar with the safety measures docum ented
below.

*The model shown in the picture is subjected to change without prior notice.

Pilot Lamp

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Bravo 1.1 LE OWNER’S MANUAL

Introduction

Thank

you

for purchasing the JAS Audio Bravo 1.1 LE Vacuum Tube Pre-amplifier.

Exquisiteness of this rep-amplifier is accomplished by utilizing two boxes made of MDF

for accommodating the circuit and the power supply separately. Having installed with two

sets of chokes for regulating passage of high and low frequency signal flow, this amplifier

is successful in delivering smooth and vivid sound over the entire frequency range in signal

amplification. Moreover, a balance between definition and tonal expression can be

achieved. Two pieces each of 12AX7 tubes and 12AT7 tubes are fixed on the vibration

damping acrylic boards next to the main circuit board. Current rectification is done by the

5Z4P tube inside the power supply box. Both cabinets are made of MDF laminated with

piano finish on Rosewood veneer. Materials used are ideal for eliminating vibration and

blocking of electro-magnetic interference to the circuit.

Gain Control Knob Volume Knob Selector

Preliminary

The circuit board together with components such as vacuum tubes and the power

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