Woo Audio WA7 Fireflies - Manual (Page 4)

©2013 WOO AUDIO tm Inc. All rights reserved. www.wooaudio.com Rev 1.2. April, 2013 4
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.
The D-A converter is designed to be capable of up to 32-bit/192k 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 visible from any viewing angles, a
linear external power supply for amplification circuitries, a custom built 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 incredibly 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 be used as a stand-alone D-A
Converter.