Woo Audio WA7 Fireflies User Manual

©2013WOOAUDIO
tm
Inc.Allrightsreserved. www.wooaudio.com Rev1.2.April,2013  1

WOO AUDIO WA7 Fireflies
Pure Class-A Single-ended Vacuum Tube Headphone Amplifier
&
32-Bit/192kHz Digital to Analog Convertor
Owner’s Manual
Please review this manual before operating your WOO AUDIO™ product.

Woo Audio WA7 Fireflies Specifications

General

USB Input	Yes
Analog Input	RCA
Inputs	USB, RCA
Weight	6.6 lbs (3 kg)
Output Power	1W per channel
Input Impedance	100k Ohms
Headphone Output	1/4" (6.3mm)
DAC Chip	ESS Sabre
Outputs	Headphone out

Summary

Important Safety Information

Vacuum Tube Installation Safety

Install vacuum tubes carefully to prevent damage and warranty voidance.

Malfunction Precautions

Turn off unit immediately if smoke or unusual smell occurs to prevent injury.

Internal Circuitry Warning

Child Safety Precaution

Getting Started

What's in the Box

Device Layout and Controls

Front Panel Overview

Top Panel Features

Back Panel Connections

Quick Installation

Tube Installation Process

Detailed steps for correctly installing the vacuum tubes, emphasizing alignment and gentle insertion.

Umbilical Power Cord Connection

Instructions for connecting the amplifier and power supply units using the umbilical cord.

Installation and Powering Up

Powering Up the Unit

USB Operation and Configuration

Asynchronous USB 2.0 Port Usage

USB Driver Installation (Windows)

Operations

Operational Prohibitions (DO NOT)

Lists actions to avoid during operation, such as improper tube installation or touching hot tubes.

Recommended Operational Practices (DO)

Outlines best practices for operating the unit, including placement and warm-up procedures.

Frequently Asked Questions (FAQ)

Warranty and Service

Product Specifications