Woo Audio’s WA7 ‘Fireflies’ high performance vacuum tube headphone amplifier
For the likes of most demanding audiophiles, the New York-based manufacturer of exceptional hand-crafted audio components Woo Audio which earlier impressed us with its $10,000 Mono-Block amp that lets you switch between different varieties of sound output channels simply by clocking a couple of switches, has now come up with WA7 “Fireflies” Amp/DAC, which is an impressive amalgamation of high performance vacuum tube headphone amplifier with an advanced built-in USB Digital-to-Analog Converter. Notably, despite being incredibly compact in size, the $799 WA7 Fireflies is truly a power-house which comes with the incredible capacity to drive almost any discerning audiophile headphones.
With semi-conductors utilized in the entire path of the signal, it’s a pure tube design which impressively uses 6C45 tubes in a class-A, single-ended topology, with transformer coupled outputs.
Also the D-A converter has been especially designed, developed and produced to be capable of up to 32-bit/192k sampling rates, which certainly helps maintain pure data integrity, which is then transmitted via USB 2.0 interface which operates in asynchronous mode.
Further, the high quality construction features of this super charged amp in a compact size include a pair of Nickel Alloy core output transformers, all-aluminum chassis, a linear external power supply, a custom built toroidal power transformer, and multi-layer military grade.
It also comes with a dedicated port for in-ear-monitors that carries a full range of volume controls ensuring minimal noise.
Besides,we have also seen some of the finest monoblock amplifiers, including the PA-M300 Series 2 Monoblock Amplifier, the Momentum monoblock amplifier inspired by Apple gadgets’ clean look, the Rapture monoblock amplifier from Emille Labs and the Gryphon Audio designed Solo Mephisto amplifier, and the GoldAmp, to name a few.