Jas-Audio BRAVO 2.3SE User Manual

OWNER’S MANUAL

JAS Bravo 2.3SE

6C33 Vacuum Tube

Single-Ended Class A

Integrated Amplifier

NOTE: Before installing your new Bravo 2.3 audio 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-audio.com “.

-1-

JAS AUDIO HIGH FIDELITY

Welcome to JAS Audio Family! This JAS Bravo 2.3 integrated amplifier is designed and
manufactured to the highest quality standards. The design denotes performance,
elegance, and simplicity. You will find this tube amplifier visually pleasing and easy to use
without going through pages of instructions. IMPORTANT: before operating t he unit, make sure
that you are familiar with the safety measures documented below.

Bravo 2.3SE OWNER’S MANUAL

Introduction

Thank you for purchasing the JAS Audio Bravo 2.3 Integrated Amplifier. Standing on the chassis

Single-Ended Class A Integrated Amplifier

immediate in front of the transformer casing are two 5Z3P r ectifier tubes. On eit her ends of the front
row are 6C33 drive stage tubes separated by two 6J4P input stage tub es in the midd le. The transformer
cage and the tube platform on the chassis are both overlaid with hand finished solid wooden board
engraved with scripts of Bravo and a thick acyclic sheet engraved with tube notations and other
indications r espectively. The decorations and indications ar e intended to put an appearance of stylish
and elegance in front of audience. Made of aluminum alloy, the front panel of 8mm in t hickness is
also a representation of coher ence in design of making the c hassis robust and the electronics working
with durability .

6C33
5Z3P
6J4P

- 2-

Preliminary

The front panel of Bravo 2.3 features a step-less negative feedback knob that regulates amount of
signal feedback in music playing for meeting individual preferences. Signal input to 4 sets of RCA
female plugs is selectable by the selector on the right of the panel. Power switch is located on the left
of the panel.

Negative feedback knob Selector

It is important to be careful with tube installati on. Please do not force anything,
easy does it! This precaution is mentioned to help you obtain pleasing results and
avoid damage! If you have any trouble replacing or changing tubes, pl ease don’t
hesitate to call your dealer!

Tube Replacement

Caution: Make sure the amplifier has been unplugged for 30 minutes from the AC mains before

replacing the tubes. This is to avoid any risk of shock or discomfort from high temperature.
Although tube life span varies depending on the nature and degree of use, the 6C33 output tubes
and the 6J4P driver tubes should last years in the Bravo 2.3 under normal home use.

Cautionary Terms

When the following cautionary terms are used in this manual, these definitions

apply:

Electrical hazard! Misuse or failure to follow instructions properly may result
in personal injury or death!

CAUTION: No risk of personal injury; however, misuse or failure to follow
instructions may result in damage to equipment.

NOTE: No risk of personal injury or equipment damage; however, misuse or
failure to follow instructions may prevent proper performance

- 3 -