Pure Class-A tube headphone amplifier with 32-Bit, 192K USB Digital-to-Analog Converter
The new WA7tp (left) is a vacuum tube external linear power supply utilizing two 12AU7 tubes as rectifiers.
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 32-bit/192k sampling rates. This maintains pure data integrity, which 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 remote-controlled 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.
* Includes a WA7p solid state power supply
** Includes a WA7tp vacuum tube power supply
☐ One (1) year limited warranty cover amplifier and power supply parts and defects, thirty (30) days for tubes. No coverage on glass except for defects on arrival.
☐ Shipping address outside the of Contiguous U.S. will be billed for additional shipping cost.
Out of stock, due March 31st, 2015
A power-house to drive even the most demanding full-sized headphones, along with a dedicated mini phone jack tailored for in-ear-monitors.
Pure tube design without the use of semi-conductors in the amplification circuitry. The 6C45 triode acts as both driver and power tube.
High fidelity listening experience in the most simplistic form
The USB input supports up to 32/192k high-res playback. The RCA connectors can be used either as analog inputs or as D-A outputs. Both in/out signals are user selectable on the back panel.
The WA7p linear external power supply provides pristine energy to the amplifier. It can be placed where ever you please to keep the simplicity of the unit.
*NEW* WA7tp tubed power supply takes sonic performance to a new level. Same gorgeous design and dimension as WA7 and WA7d Fireflies. Hefty ON/OFF power button that feels substantial when pressed
We chose the commonly available 12AU7 tube for the convenience of allowing the user to tubes swap among other brands available for a personalized, tailored sound signature.
Moving up from the standard solid state power supply (PSU) to the new WA7tp (vacuum tubes PSU) would improve the overall sound quality of our award-winning WA7 Fireflies. You should notice, enhanced the stereo separation, smoother treble, more air, more effortless sound.
WA7 Fireflies brings power, simplicity, beauty, and elegance to your desktop workspace
A thick block of superior quality, high clarity glass is provided to protect the tubes, while maintaining a clean and elegant aesthetic.
Available in Black and Silver with Clear glass.