©2016 WOO AUDIO
tm
Inc. All rights reserved. www.wooaudio.com Rev 1. . March 15, 2016 4
Overview
The multi award-winning WA7 Fireflies is improved and better than ever. Among
the numerous enhancements is a newly designed ESS SA RE Reference DAC that is
crucial to the WA7's sound quality. The new ESS DAC reveals the elusive – yet
desired – dynamics and details in your digital audio files. The new XMOS xCORE-
AUDIO asynchronous clocking US controller is compatible with PC, Mac, Android
and iOS devices. Other enhancements include improved analog circuitry, premium
Teflon tube sockets, and US connector.
The WOO Audio WA7 “Fireflies” Amp/DAC is a com ination of high performance
vacuum tu e headphone amplifier with a uilt-in USB Digital-to-Analog Converter. It
employs a pure tu e design, utilizing 6C45 tu es in a class-A, single-ended topology,
with transformer coupled outputs. No semi-conductors used in the entire signal path.
The D-A converter is designed to e capa le of up to 24- it/384k sampling rates. Pure
data integrity is maintained while it is transmitted via standard high speed USB 2.0
interface operating in asynchronous mode.
The high quality construction features include a pair of Nickel Alloy core output
transformers, all-aluminum chassis with no screws visi le from any viewing angles, a
linear external power supply for amplification circuitries, a custom uilt toroidal power
transformer, and multi-layer military grade PCBs.
The dedicated port for in-ear-monitors carries a full range of volume controls ensuring
minimal noise. Despite its incredi ly compact size, “Fireflies” is a power-house with the
capacity to drive almost any demanding audiophile headphones. To accommodate
different system setup needs, “Fireflies” can also e used as a stand-alone D-A
Converter.
