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.
Woo Audio has produced an amplifier that maximizes the distinctive attributes of a benchmark headphone, the Stax SR-009, and, as a result, we have to consider the Woo WES a benchmark design in its own right. - AV Guide.
I don't mean to sound overly dramatic, but the WES is one of those break through products that leaves you wondering about the future of high-end audio.
* Normal build time is 2 to 4 weeks.
* Included tubes:
1 quad of EL34 (power), 1 quad of 6SL7 (driver),
2 5AR4 (rectifiers), 2 12AU7 (phase splittor)
* PSU to AMP power supply cord is included.
* AC power supply cord, interconnection cable are not included
* Shopping cart applies to the U.S. buyers only. International buyers please contact for shipping cost and payment instruction
* From a cold start, the dual power switch protects the tubes from a high current surge. Turning on just one of the power switches provides low voltage to the heaters while the unit remains in stand-by mode. Turning on both power switches allows the unit to function properly.
Parts upgrade 1:
V-Cap inter-stage coupling caps $1470
V-Cap Teflon Film Tin Foil reference grade audio capacitors
Parts upgrade 2:
V-Cap output coupling capacitors $430
V-Cap Oil Impregnated Metallized Polypropylene reference grade audio capacitors
Power tubes upgrade:
Shugang 50-Years Treasure 6CA7 matched quad.
We source the top quality tubes from the manufacturer directly. The tubes would be tested by us in an actual amplifier to meet the highest quality. $480 with 12-month warranty from Woo Audio.
The Treasure series is a statement work of Shuguang's 50-years' of expertise in vacuum tube design and production, a highest quality build. Its unique black glass is due High Polymer Compound Carbon (HPCC) coating. Compared to traditional carbon spray technology, HPCC coating will allow greater concentration of electrons, enhance and maintain stability of the electron flow, maximize "secondary electron emission surpression" from the glass enclosure, in turn reduce effects of electron swirl which generates internal noises from the vacuum tube itself.
Driver tubes upgrade:
Sophia 6SL7 grade A matched quad. $400
Sohpia's latest 6SL7 sounds faithful and looks aesthetically pleasing. It's silky, extended tremble, open mid-range, deep soundstage.
Rectifier tubes upgrade:
Haltron 5AR4 NOS matched pair, U.K. made. $260
These highy regarded rectifiers offer exceptional depth, full body, warm mid-range, fast attack, and reveal fine details in the music.