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Summary of Contents for Woo Audio WA7 Fireflies
- Page 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. ©2013 WOO AUDIO Inc. All rights reserved. www.wooaudio.com Rev 1.2. April, 2013 1 ...
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Page 2: Important Safety Information
Important Safety Information CAUTION: Amplifiers are shipped without the vacuum tubes installed. The end user must install the tubes, taking great care to install them correctly in the appropriate sockets. Incorrect installation will result in serious damage not covered by the warranty. -
Page 3: Table Of Contents
Table of Contents IMPORTANT SAFETY INFORMATION TABLE OF CONTENTS OVERVIEW GETTING STARTED QUICK INSTALLATION OPERATIONS FAQ - FREQUENTLY ASKED QUESTIONS WARRANTY AND SERVICE PRODUCT SPECIFICATION REVIEWS ©2013 WOO AUDIO Inc. All rights reserved. www.wooaudio.com Rev 1.2. April, 2013 3 ... -
Page 4: Overview
Overview The WOO Audio WA7 “Fireflies” Amp/DAC is a combination of high performance vacuum tube headphone amplifier with a built-in USB Digital-to-Analog Converter. It employs a pure tube design, utilizing 6C45 tubes in a class-A, single-ended topology, with transformer coupled outputs. No semi-conductors used in the entire signal path. - Page 5 Features: o Handmade output transformer with Nickel Alloy core o 32-Bit, 192kHz high resolution playback o Ultra-low jitter USB 2.0 runs on Asynchronous mode o High and low impedance output facilitated via toggle switch on back panel o Open load protection will automatically engage to prevent the amp from damaging when no headphones are plugged in o Multi-functional switch for USB input, RCA input, and RCA output via D-A.
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Page 6: Getting Started
④ ⑥ ① Umbilical Power Cord ② Chamois Polishing Cloth for glass and metal cleaning ③ External Power Supply ④ Tube Protection Glass ⑤ WA7 Fireflies Amplifier * USB and inter-connection ⑥ 6C45 Matched Pair Tubes cables are not included. ©2013 WOO AUDIO Inc. All rights reserved. ... -
Page 7: Front Panel
Front Panel ⑦ Volume control for headphone outputs ⑧ 3.5mm or 1/8” mini In-Ear-Monitors headphone jack ⑨ 6.35mm or 1/4"headphone jack Top Panel ⑩ Tube sockets for 6C45 vacuum tubes Please pay close attention to vacuum tube installation alignment marks! ⑪... -
Page 8: Ac Power Connection
External Power Supply External Power Supply DC power connection AC power connection ⑪ Umbilical cord socket (female) ⑪ AC power inlet ⑫ Power LED light ⑫ Fuse box slow blow fuse, 400mA@115V or 200mA@230V Connections The WA7 Firflies can be connected in one of the following ways. USB 2.0 RCA line-out to active monitors... -
Page 9: Quick Installation
Quick Installation Installing tubes Align the tube in the tube socket according to the RED arrows Hold the tube firmly, slowly inserting it down into the socket. Care must be taken to only apply force perpendicular to the tube socket; never insert it at an angle. - Page 10 Powering Up To power up on the WA7 Fireflies, flip the power switch ⑯ to the “I” position. The LED on the power supply will lit. Vacuum tubes should lit at the same time. ©2013 WOO AUDIO Inc. All rights reserved. www.wooaudio.com ...
- Page 11 Using the Asynchronous USB 2.0 port: The WA7 Fireflies offers a USB 2.0 port ⑪, refer to the above diagram, which is compatible with Windows or Mac OS computer. Installing the USB driver *These steps only apply for Windows 7.
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Page 12: Operations
Turn on the amp before properly installing ALL tubes and power supply. o Block vent holes of the power supply. o Use tubes that are not approved by Woo Audio. o Align the male plug to the DC input connector. The arrow marking on the plug should face up when it is properly oriented. -
Page 13: Faq - Frequently Asked Questions
FAQ - Frequently Asked Questions Computer cannot find the WA7 Fireflies USB DAC. Check USB cable connection and make sure the cable is USB 2.0 compatible. See “Installing USB driver” section for configuration. No sound is coming out of the headphone jack. -
Page 14: Warranty And Service
Please do not discard original packing materials. If for any reason, the equipment is to be shipped back to Woo Audio, please use the original packaging, including a copy of sales purchase documents and a detailed explanation of the problem(s). -
Page 15: Product Specification
Product Specification Model: WA7 Fireflies Headphone amp design Single-ended, class-A, transformers output Power supply Linear external high-performance power supply Tubes used One matched pair of 6C45, one tube per channel USB receiving chipset: C-Media 6631 DAC chip TI PCM5102A 32-bit chip... -
Page 16: Reviews
Reviews The WA7 is one of the few home headphone amps that sounds great with full-size and in-ear headphones. - Audiophiliac This is possibly the most linear DAC and headphone amp I've heard. -Positive Feedback The Woo reaches DEEP, and is POWERFUL. It’s everything you want it to be and just a tad more …... - Page 17 Woo Audio is committed to continuously improve its products. We therefore reserve the right to improve on our design without notice. ©2013 WOO AUDIO Inc. All rights reserved. www.wooaudio.com Rev 1.2. April, 2013 17 ...
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