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WOO Audio

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Gojakla
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Posts: 1754
Joined: Tue Mar 29, 2016 10:56 am

WOO Audio

Unread post #1 by Gojakla » Thu Aug 04, 2016 4:50 pm

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Official Site


OVERVIEW

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Founded in 2004, Woo Audio's mission was then and to this day remains to fulfill the desires of the
most demanding audiophiles and delight both listener's eye and ear.

Throughout more than 40 years' experience building amplifiers and other electronic components,
we came to the conclusion that simple design sound the best. As a result, Woo Audio's philosophy is
rooted in simplicity of design, both electronically and aesthetically.


ABOUT*

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Bob Youman: My understanding is that Woo Audio is a family affair. Can you explain a little of
the history of the company and the key players and their roles?

Jack Wu: The company was formed in 2003. We are located in Queens, New York. Except for
metal and casing work, all company business management functions, research and development
and assembly are performed at this location.

There are many important employees and contributors to the success of our company, but the
three key players are my father Wei Wu, my brother Zhidong Wu and myself. We three all wear
several hats and there is some common and shared input for all functions, but we each have
primary responsibilities.

My father is the chief engineer and designer from a technical perspective. He is self-taught but he
has an impressive amount of technical knowledge and experience that spans over 40 years. He is an
extreme DIYer and made his first television in his hometown in his earlier 20's.

As a young man in China, he was in charge of sound at the Cantonese Opera. This required
expertise in both solid state and tube electronics. It also provided him with insight and experience
with the sound of live music. This background has greatly impacted the design and manufacturing
of our products. It is a key reason for our success.

My brother is in charge of all manufacturing processes. He takes the input and direction from my
overall product vision and my father's fundamental design and makes it a reality. His focus is on
execution and quality. This is extremely difficult considering our high standards and the extensive
range of components, costs and associated performance requirements.

My own responsibilities are primarily focused on pre-sales and post-sales support, purchasing, and
quality control. This includes basic business management, marketing and customer support.
Though we all contribute to the overall product design, I like to think of myself as the visionary for
defining the scope and objectives for new products. This can be from both an aesthetic and
performance perspective.



Bob Youman: What generated this focus on headphone amplifiers?

Jack Wu: Our family roots and experience are grounded in New York City (NYC). From the
beginning, we felt that due to the size, cost and privacy concerns of a typical NYC apartment, it was
difficult for a city dweller to find a way to implement and realize a high level of quality sound. So, it
all started with a simple customer need (like most product ideas) and a focus on big city living
requirements, but market demand has obviously grown well beyond that.

High-end headphones were readily available to the market. More and more models were being
introduced and the quality of sound was getting better and better. We felt that there was a definite
opportunity and need for better solutions to drive these high-end headphones—specifically with
tube amplifiers. Thus Woo Audio.



* Parts taken from Jack Wu's interview at Bob Youman. Read the full interview at positive-feedback.com




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Gojakla
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Posts: 1754
Joined: Tue Mar 29, 2016 10:56 am

Re: WOO Audio

Unread post #2 by Gojakla » Thu Aug 04, 2016 5:01 pm

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Woo Audio’s epic WA8 Eclipse is the world's first battery-operated vacuum tube headphone amplifier.
Featuring SET Class-A transformer output for transparent sound quality, a built-in 24bit/384kHz DAC,
and easy transportability/set-up, high fidelity audio listening is possible anywhere.

$1799/1899


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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 is a pure tube design,
utilizing 6C45 tubes in a class-A, single-ended topology, with transformer coupled outputs. There
are no semiconductors used in the entire amplification path. The D/A converter is designed to be
capable of up to 24-bit/384k sampling rates.


$999/1599


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The WA3 achieved high standard of Woo Audio build quality, high performance and yet affordable.
Its compact size offers both headphone and pre-amp capability. If one ever look for a best value
product for high impedance headphones or a true pre-amp, look no further.
Pre-amp output is sold as an option.


$599


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Singled-ended Triode Class-A, All Tube Drive, OTL.
WA2 is a high performance headphone amplifier for even the most power hungry headphones.
High gain, ultra low noise preamp, utilizing driver and power tubes.

$1190


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Balanced design from input to output, Class-A, All Tube Drive, Output Transformer Coupled.
Realistic, incredible detailed, and tonally balanced sound.

$1995


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Single-ended Triode Class-A, All Tube Drive, Output Transformer Coupled.
High performance headphone amplifier in a compact size. Realistic, warm, smooth sound.
Versatile design to drive a wide range of full-sized headphones and in-ear monitors.

$699


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WA5-LE 300B Single-ended Triode Class-A Headphone Amplifier. Output Transformer Coupled
Handcrafted since 2008. Latest edition offered in August 2015.

$3699


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WES is an uncompromised design, featuring EL34, 6SL7, and 5AR4/5U4GB rectifier.
All-triode drive, fully balanced. Two units design - AMP unit and Power Supply unit with dual power switch.
Innovative stackable chassis with exposed tubes.
NEW: A major revision is in place for further sound quality refinement (2011 rev).
NEW: A standard unit now build with 2 STAX headphone outputs. The HE90 output is optional.

$4990


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WooAudio GES Stax/Sennheiser HE90 Electrostatic Earspeaker Amplifier.
GES works with all 5-pin Pro bias Stax Earspeakers.

$1590


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The World’s First Mono-block Headphone and Speaker Amplifier.
This innovative monoblock amplifier not only supports both speaker and headphone output modes,
but also offers the audiophile a choice of power tubes.

Whereas a typical tube amplifier allows you to use only one type of power tube (or a substitute with
a similar rating), the 234 MONO increases your options in an elegant way. A tube switching key (TSK)
allows the amplifier to accept either 2A3, 300B, or 45 power tubes, so you can instantly switch your
tube to suit your music or your mood.

Similarly, an output switching key (OSK) allows the listener to switch between speaker and
headphone output modes, making it possible to enjoy a piece of music through headphones, then
immediately share it with friends through speakers.

To make the 234 MONO even more versatile, Woo Audio created OSKs for cathode and plate
outputs for high and low-impedance headphones.

The 234 MONO is a discrete mono block, Class A amplifier with all triode drive. No semi-conductors
are used anywhere in the circuit. With the addition of all the listening options, you have the best of
all worlds: an audiophile headphone amp and speaker amp in one. What’s more, you can then
switch from a 2A3 to a 300B or a 45 tube at any given moment. You are sure to find combinations
that will surprise and delight you.

$15,900

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