Woo Audio makes incredible headphone amplifiers in all shapes and sizes. The American manufacturer, which is based in New York, recently introduced its WA7 Fireflies headphone amplifier, which is especially cool. Priced at $999, it incorporates a 32-bit/192-kHz USB DAC and tube-based amplification into a cube that measures about 5 inches on all sides The … Continue reading Woo Audio WA7 Fireflies Headphone Amplifier