Woo Audio 2nd Gen WA7 Fireflies is a vacuum tube headphone amplifier with a built-in USB Digital-to-Analog Converter. It is a pure tube design, without any semiconductors used in the entire amplification path. The case of WA7 Fireflies is made from aluminum and glass, giving it a premium high-end feel. The 3.5mm port has a lower output designed for in-ear headphones and the 6.5mm port offers the full output of the amp for larger headphones, along with high and low impedance selector on the back.
Compared with the solid-state headphone amplifiers, WA7 Fireflies delivers a greater sense of dimensions, wider soundstage, and more defined separation of the sound of each instrument. Vacuum tube based amplifiers / DACs offer the ultimate listening experience and WA7 Fireflies is an affordable entry into the audiophile’s world.
Other audiophile caliber headphones: